11620605660 has 48 divisors (see below), whose sum is σ = 33659690400. Its totient is φ = 2991971584.

The previous prime is 11620605653. The next prime is 11620605673. The reversal of 11620605660 is 6650602611.

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, 3337515 + ... + 3340994.

It is an arithmetic number, because the mean of its divisors is an integer number (701243550).

Almost surely, 2^11620605660 is an apocalyptic number.

11620605660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11620605660 is an abundant number, since it is smaller than the sum of its proper divisors (22039084740).

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

11620605660 is a wasteful number, since it uses less digits than its factorization.

11620605660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6678550 (or 6678548 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The spelling of 11620605660 in words is "eleven billion, six hundred twenty million, six hundred five thousand, six hundred sixty".