64765954236 has 12 divisors (see below), whose sum is σ = 151120559912. Its totient is φ = 21588651408.

The previous prime is 64765954223. The next prime is 64765954237. The reversal of 64765954236 is 63245956746.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64765954237) 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, 2698581415 + ... + 2698581438.

Almost surely, 2^64765954236 is an apocalyptic number.

It is an amenable number.

64765954236 is an abundant number, since it is smaller than the sum of its proper divisors (86354605676).

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

64765954236 is a wasteful number, since it uses less digits than its factorization.

64765954236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5397162860 (or 5397162858 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 57.

The spelling of 64765954236 in words is "sixty-four billion, seven hundred sixty-five million, nine hundred fifty-four thousand, two hundred thirty-six".