65639064096 has 480 divisors, whose sum is σ = 213922114560. Its totient is φ = 19651382784.

The previous prime is 65639064067. The next prime is 65639064167. The reversal of 65639064096 is 69046093656.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 189161395 + ... + 189161741.

It is an arithmetic number, because the mean of its divisors is an integer number (445671072).

Almost surely, 2^65639064096 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 65639064096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106961057280).

65639064096 is an abundant number, since it is smaller than the sum of its proper divisors (148283050464).

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

65639064096 is a wasteful number, since it uses less digits than its factorization.

65639064096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 54.

The spelling of 65639064096 in words is "sixty-five billion, six hundred thirty-nine million, sixty-four thousand, ninety-six".