64369958016 has 512 divisors, whose sum is σ = 217640908800. Its totient is φ = 16404480000.

The previous prime is 64369957991. The next prime is 64369958033. The reversal of 64369958016 is 61085996346.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 256453891 + ... + 256454141.

It is an arithmetic number, because the mean of its divisors is an integer number (425079900).

Almost surely, 2^64369958016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64369958016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108820454400).

64369958016 is an abundant number, since it is smaller than the sum of its proper divisors (153270950784).

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

64369958016 is a wasteful number, since it uses less digits than its factorization.

64369958016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 496 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 57.

The spelling of 64369958016 in words is "sixty-four billion, three hundred sixty-nine million, nine hundred fifty-eight thousand, sixteen".