65221921395 has 48 divisors (see below), whose sum is σ = 119035987200. Its totient is φ = 32944656960.

The previous prime is 65221921363. The next prime is 65221921439. The reversal of 65221921395 is 59312912256.

65221921395 is a `hidden beast` number, since 6 + 522 + 1 + 92 + 1 + 39 + 5 = 666.

It is not a de Polignac number, because 65221921395 - 2⁵ = 65221921363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 65221921395.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3632490 + ... + 3650400.

It is an arithmetic number, because the mean of its divisors is an integer number (2479916400).

Almost surely, 2^65221921395 is an apocalyptic number.

65221921395 is a deficient number, since it is larger than the sum of its proper divisors (53814065805).

65221921395 is a wasteful number, since it uses less digits than its factorization.

65221921395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22200 (or 22197 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The spelling of 65221921395 in words is "sixty-five billion, two hundred twenty-one million, nine hundred twenty-one thousand, three hundred ninety-five".