64036065136 has 20 divisors (see below), whose sum is σ = 124098448312. Its totient is φ = 32010659136.

The previous prime is 64036065113. The next prime is 64036065139. The reversal of 64036065136 is 63156063046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64036065139) 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, 388851 + ... + 528466.

Almost surely, 2^64036065136 is an apocalyptic number.

It is an amenable number.

64036065136 is a deficient number, since it is larger than the sum of its proper divisors (60062383176).

64036065136 is a wasteful number, since it uses less digits than its factorization.

64036065136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921688 (or 921682 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 40.

The spelling of 64036065136 in words is "sixty-four billion, thirty-six million, sixty-five thousand, one hundred thirty-six".