20622634236 has 24 divisors (see below), whose sum is σ = 53466089040. Its totient is φ = 6874211376.

The previous prime is 20622634223. The next prime is 20622634267. The reversal of 20622634236 is 63243622602.

20622634236 is a `hidden beast` number, since 2 + 0 + 6 + 226 + 3 + 423 + 6 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20622634236.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95475051 + ... + 95475266.

It is an arithmetic number, because the mean of its divisors is an integer number (2227753710).

Almost surely, 2^20622634236 is an apocalyptic number.

It is an amenable number.

20622634236 is an abundant number, since it is smaller than the sum of its proper divisors (32843454804).

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

20622634236 is a wasteful number, since it uses less digits than its factorization.

20622634236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190950330 (or 190950322 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The spelling of 20622634236 in words is "twenty billion, six hundred twenty-two million, six hundred thirty-four thousand, two hundred thirty-six".