64493359028 has 24 divisors (see below), whose sum is σ = 133434537600. Its totient is φ = 26686906848.

The previous prime is 64493359013. The next prime is 64493359033. The reversal of 64493359028 is 82095339446.

It is a congruent number.

It is an unprimeable number.

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, 39711848 + ... + 39713471.

It is an arithmetic number, because the mean of its divisors is an integer number (5559772400).

Almost surely, 2^64493359028 is an apocalyptic number.

It is an amenable number.

64493359028 is an abundant number, since it is smaller than the sum of its proper divisors (68941178572).

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

64493359028 is a wasteful number, since it uses less digits than its factorization.

64493359028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79425359 (or 79425357 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 64493359028 in words is "sixty-four billion, four hundred ninety-three million, three hundred fifty-nine thousand, twenty-eight".