65905256164 has 24 divisors (see below), whose sum is σ = 125835702048. Its totient is φ = 29952987840.

The previous prime is 65905256159. The next prime is 65905256201. The reversal of 65905256164 is 46165250956.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253192 + ... + 442624.

It is an arithmetic number, because the mean of its divisors is an integer number (5243154252).

Almost surely, 2^65905256164 is an apocalyptic number.

It is an amenable number.

65905256164 is a deficient number, since it is larger than the sum of its proper divisors (59930445884).

65905256164 is a wasteful number, since it uses less digits than its factorization.

65905256164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197355 (or 197353 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 65905256164 in words is "sixty-five billion, nine hundred five million, two hundred fifty-six thousand, one hundred sixty-four".