64521462344 has 16 divisors (see below), whose sum is σ = 120983164800. Its totient is φ = 32259285072.

The previous prime is 64521462307. The next prime is 64521462349. The reversal of 64521462344 is 44326412546.

It is not an unprimeable number, because it can be changed into a prime (64521462349) 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, 22277 + ... + 359915.

It is an arithmetic number, because the mean of its divisors is an integer number (7561447800).

Almost surely, 2^64521462344 is an apocalyptic number.

It is an amenable number.

64521462344 is a deficient number, since it is larger than the sum of its proper divisors (56461702456).

64521462344 is a wasteful number, since it uses less digits than its factorization.

64521462344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361532 (or 361528 counting only the distinct ones).

The product of its digits is 552960, while the sum is 41.

The spelling of 64521462344 in words is "sixty-four billion, five hundred twenty-one million, four hundred sixty-two thousand, three hundred forty-four".