65646630164 has 12 divisors (see below), whose sum is σ = 117325892544. Its totient is φ = 32124946584.

The previous prime is 65646630157. The next prime is 65646630221. The reversal of 65646630164 is 46103664656.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174591914 + ... + 174592289.

It is an arithmetic number, because the mean of its divisors is an integer number (9777157712).

Almost surely, 2^65646630164 is an apocalyptic number.

It is an amenable number.

65646630164 is a deficient number, since it is larger than the sum of its proper divisors (51679262380).

65646630164 is a wasteful number, since it uses less digits than its factorization.

65646630164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349184254 (or 349184252 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 47.

The spelling of 65646630164 in words is "sixty-five billion, six hundred forty-six million, six hundred thirty thousand, one hundred sixty-four".