64260931965696 has 1152 divisors, whose sum is σ = 212116574208000. Its totient is φ = 19106415820800.

The previous prime is 64260931965673. The next prime is 64260931965701. The reversal of 64260931965696 is 69656913906246.

It is a happy number.

64260931965696 is a `hidden beast` number, since 6 + 4 + 2 + 609 + 3 + 1 + 9 + 6 + 5 + 6 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 57944933590 + ... + 57944934698.

Almost surely, 2^{64260931965696} 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 64260931965696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106058287104000).

64260931965696 is an abundant number, since it is smaller than the sum of its proper divisors (147855642242304).

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

64260931965696 is a wasteful number, since it uses less digits than its factorization.

64260931965696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558 (or 1538 counting only the distinct ones).

The product of its (nonzero) digits is 680244480, while the sum is 72.

The spelling of 64260931965696 in words is "sixty-four trillion, two hundred sixty billion, nine hundred thirty-one million, nine hundred sixty-five thousand, six hundred ninety-six".