64146708469 has 4 divisors (see below), whose sum is σ = 67522851040. Its totient is φ = 60770565900.

The previous prime is 64146708463. The next prime is 64146708487. The reversal of 64146708469 is 96480764146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 64146708469 - 2⁷ = 64146708341 is a prime.

It is a super-2 number, since 2×64146708469² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64146708463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688071257 + ... + 1688071294.

It is an arithmetic number, because the mean of its divisors is an integer number (16880712760).

Almost surely, 2^64146708469 is an apocalyptic number.

It is an amenable number.

64146708469 is a deficient number, since it is larger than the sum of its proper divisors (3376142571).

64146708469 is a wasteful number, since it uses less digits than its factorization.

64146708469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3376142570.

The product of its (nonzero) digits is 6967296, while the sum is 55.

The spelling of 64146708469 in words is "sixty-four billion, one hundred forty-six million, seven hundred eight thousand, four hundred sixty-nine".