22156555622004 has 36 divisors (see below), whose sum is σ = 56239242519460. Its totient is φ = 7354873232640.

The previous prime is 22156555621939. The next prime is 22156555622023. The reversal of 22156555622004 is 40022655565122.

22156555622004 is a `hidden beast` number, since 2 + 2 + 1 + 5 + 65 + 5 + 562 + 20 + 0 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5598997088400 + 16557558533604 = 2366220^2 + 4069098^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1276879039 + ... + 1276896390.

Almost surely, 2^{22156555622004} is an apocalyptic number.

It is an amenable number.

22156555622004 is an abundant number, since it is smaller than the sum of its proper divisors (34082686897456).

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

22156555622004 is a wasteful number, since it uses less digits than its factorization.

22156555622004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553775680 (or 2553775675 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 22156555622004 in words is "twenty-two trillion, one hundred fifty-six billion, five hundred fifty-five million, six hundred twenty-two thousand, four".