65164345944 has 32 divisors (see below), whose sum is σ = 164523849840. Its totient is φ = 21506384000.

The previous prime is 65164345927. The next prime is 65164346047. The reversal of 65164345944 is 44954346156.

It is a super-2 number, since 2×65164345944² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13439067 + ... + 13443914.

Almost surely, 2^65164345944 is an apocalyptic number.

It is an amenable number.

65164345944 is an abundant number, since it is smaller than the sum of its proper divisors (99359503896).

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

65164345944 is a wasteful number, since it uses less digits than its factorization.

65164345944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26883091 (or 26883087 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 51.

The spelling of 65164345944 in words is "sixty-five billion, one hundred sixty-four million, three hundred forty-five thousand, nine hundred forty-four".