65172630166 has 64 divisors (see below), whose sum is σ = 115824867840. Its totient is φ = 26924889600.

The previous prime is 65172630161. The next prime is 65172630167. The reversal of 65172630166 is 66103627156.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65172630161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21096750 + ... + 21099838.

It is an arithmetic number, because the mean of its divisors is an integer number (1809763560).

Almost surely, 2^65172630166 is an apocalyptic number.

65172630166 is a deficient number, since it is larger than the sum of its proper divisors (50652237674).

65172630166 is a wasteful number, since it uses less digits than its factorization.

65172630166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589.

The product of its (nonzero) digits is 272160, while the sum is 43.

The spelling of 65172630166 in words is "sixty-five billion, one hundred seventy-two million, six hundred thirty thousand, one hundred sixty-six".