11621556000656 has 20 divisors (see below), whose sum is σ = 25733445430272. Its totient is φ = 4980666857376.

The previous prime is 11621556000623. The next prime is 11621556000709. The reversal of 11621556000656 is 65600065512611.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51881946320 + ... + 51881946543.

Almost surely, 2^{11621556000656} is an apocalyptic number.

11621556000656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11621556000656 is an abundant number, since it is smaller than the sum of its proper divisors (14111889429616).

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

11621556000656 is a wasteful number, since it uses less digits than its factorization.

11621556000656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103763892878 (or 103763892872 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 44.

The spelling of 11621556000656 in words is "eleven trillion, six hundred twenty-one billion, five hundred fifty-six million, six hundred fifty-six", and thus it is an aban number.