64951656156 has 18 divisors (see below), whose sum is σ = 164183353152. Its totient is φ = 21650552040.

The previous prime is 64951656151. The next prime is 64951656163. The reversal of 64951656156 is 65165615946.

64951656156 is a `hidden beast` number, since 6 + 4 + 9 + 5 + 16 + 5 + 615 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64951656151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 902106300 + ... + 902106371.

Almost surely, 2^64951656156 is an apocalyptic number.

It is an amenable number.

64951656156 is an abundant number, since it is smaller than the sum of its proper divisors (99231696996).

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

64951656156 is a wasteful number, since it uses less digits than its factorization.

64951656156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1804212681 (or 1804212676 counting only the distinct ones).

The product of its digits is 5832000, while the sum is 54.

The spelling of 64951656156 in words is "sixty-four billion, nine hundred fifty-one million, six hundred fifty-six thousand, one hundred fifty-six".