11566280620 has 12 divisors (see below), whose sum is σ = 24289189344. Its totient is φ = 4626512240.

The previous prime is 11566280591. The next prime is 11566280707. The reversal of 11566280620 is 2608266511.

It is a self number, because there is not a number n which added to its sum of digits gives 11566280620.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289156996 + ... + 289157035.

It is an arithmetic number, because the mean of its divisors is an integer number (2024099112).

Almost surely, 2^11566280620 is an apocalyptic number.

11566280620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11566280620 is an abundant number, since it is smaller than the sum of its proper divisors (12722908724).

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

11566280620 is a wasteful number, since it uses less digits than its factorization.

11566280620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578314040 (or 578314038 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The spelling of 11566280620 in words is "eleven billion, five hundred sixty-six million, two hundred eighty thousand, six hundred twenty".