83220863265 has 40 divisors (see below), whose sum is σ = 157032754560. Its totient is φ = 42048432288.

The previous prime is 83220863263. The next prime is 83220863281. The reversal of 83220863265 is 56236802238.

83220863265 is a `hidden beast` number, since 8 + 3 + 2 + 2 + 0 + 8 + 632 + 6 + 5 = 666.

It is not a de Polignac number, because 83220863265 - 2¹ = 83220863263 is a prime.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 83220863265.

It is not an unprimeable number, because it can be changed into a prime (83220863263) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5399769 + ... + 5415158.

It is an arithmetic number, because the mean of its divisors is an integer number (3925818864).

Almost surely, 2^83220863265 is an apocalyptic number.

It is an amenable number.

83220863265 is a deficient number, since it is larger than the sum of its proper divisors (73811891295).

83220863265 is a wasteful number, since it uses less digits than its factorization.

83220863265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10814963 (or 10814954 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 45.

The spelling of 83220863265 in words is "eighty-three billion, two hundred twenty million, eight hundred sixty-three thousand, two hundred sixty-five".