11556604650 has 48 divisors (see below), whose sum is σ = 30168828000. Its totient is φ = 2919562560.

The previous prime is 11556604627. The next prime is 11556604651. The reversal of 11556604650 is 5640665511.

It is a super-2 number, since 2×11556604650² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11556604599 and 11556604608.

It is not an unprimeable number, because it can be changed into a prime (11556604651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2024625 + ... + 2030324.

It is an arithmetic number, because the mean of its divisors is an integer number (628517250).

Almost surely, 2^11556604650 is an apocalyptic number.

11556604650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11556604650 is an abundant number, since it is smaller than the sum of its proper divisors (18612223350).

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

11556604650 is a wasteful number, since it uses less digits than its factorization.

11556604650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4054983 (or 4054978 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 11556604650 in words is "eleven billion, five hundred fifty-six million, six hundred four thousand, six hundred fifty".