11621556000660 has 48 divisors (see below), whose sum is σ = 34253007163200. Its totient is φ = 2935972041984.

The previous prime is 11621556000623. The next prime is 11621556000709. The reversal of 11621556000660 is 6600065512611.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5097172545 + ... + 5097174824.

It is an arithmetic number, because the mean of its divisors is an integer number (713604315900).

Almost surely, 2^{11621556000660} is an apocalyptic number.

11621556000660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11621556000660 is an abundant number, since it is smaller than the sum of its proper divisors (22631451162540).

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

11621556000660 is a wasteful number, since it uses less digits than its factorization.

11621556000660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10194347400 (or 10194347398 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 11621556000660 in words is "eleven trillion, six hundred twenty-one billion, five hundred fifty-six million, six hundred sixty", and thus it is an aban number.