65204801172 has 72 divisors (see below), whose sum is σ = 196649416320. Its totient is φ = 18629941680.

The previous prime is 65204801159. The next prime is 65204801177. The reversal of 65204801172 is 27110840256.

65204801172 is a `hidden beast` number, since 6 + 5 + 2 + 0 + 480 + 1 + 172 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65204801177) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 6155404 + ... + 6165987.

Almost surely, 2^65204801172 is an apocalyptic number.

It is an amenable number.

65204801172 is an abundant number, since it is smaller than the sum of its proper divisors (131444615148).

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

65204801172 is a wasteful number, since it uses less digits than its factorization.

65204801172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12321418 (or 12321403 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 65204801172 in words is "sixty-five billion, two hundred four million, eight hundred one thousand, one hundred seventy-two".