44521665553 has 8 divisors (see below), whose sum is σ = 45562023936. Its totient is φ = 43481533200.

The previous prime is 44521665533. The next prime is 44521665599. The reversal of 44521665553 is 35556612544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44521665553 - 2²⁹ = 43984794641 is a prime.

It is a super-2 number, since 2×44521665553² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (44521665533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381168 + ... + 484078.

It is an arithmetic number, because the mean of its divisors is an integer number (5695252992).

Almost surely, 2^44521665553 is an apocalyptic number.

44521665553 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

44521665553 is a deficient number, since it is larger than the sum of its proper divisors (1040358383).

44521665553 is a wasteful number, since it uses less digits than its factorization.

44521665553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113015.

The product of its digits is 2160000, while the sum is 46.

The spelling of 44521665553 in words is "forty-four billion, five hundred twenty-one million, six hundred sixty-five thousand, five hundred fifty-three".