64425244252446 has 128 divisors (see below), whose sum is σ = 181158276280320. Its totient is φ = 16484070952800.

The previous prime is 64425244252433. The next prime is 64425244252451.

64425244252446 is a `hidden beast` number, since 64 + 4 + 2 + 52 + 4 + 4 + 2 + 524 + 4 + 6 = 666.

64425244252446 is nontrivially palindromic in base 10.

64425244252446 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×64425244252446² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 64425244252392 and 64425244252401.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 115350420 + ... + 115907591.

It is an arithmetic number, because the mean of its divisors is an integer number (1415299033440).

Almost surely, 2^{64425244252446} is an apocalyptic number.

64425244252446 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64425244252446 is an abundant number, since it is smaller than the sum of its proper divisors (116733032027874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64425244252446 is a wasteful number, since it uses less digits than its factorization.

64425244252446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231258107 (or 231258101 counting only the distinct ones).

The product of its digits is 58982400, while the sum is 54.

The spelling of 64425244252446 in words is "sixty-four trillion, four hundred twenty-five billion, two hundred forty-four million, two hundred fifty-two thousand, four hundred forty-six".