63220917285 has 64 divisors (see below), whose sum is σ = 112846460160. Its totient is φ = 33582055680.

The previous prime is 63220917283. The next prime is 63220917307. The reversal of 63220917285 is 58271902236.

63220917285 is a `hidden beast` number, since 63 + 220 + 91 + 7 + 285 = 666.

It is not a de Polignac number, because 63220917285 - 2¹ = 63220917283 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 63220917285.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63220917283) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 61920075 + ... + 61921095.

It is an arithmetic number, because the mean of its divisors is an integer number (1763225940).

Almost surely, 2^63220917285 is an apocalyptic number.

It is an amenable number.

63220917285 is a deficient number, since it is larger than the sum of its proper divisors (49625542875).

63220917285 is a wasteful number, since it uses less digits than its factorization.

63220917285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435 (or 2429 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 63220917285 in words is "sixty-three billion, two hundred twenty million, nine hundred seventeen thousand, two hundred eighty-five".