11556700572 has 48 divisors (see below), whose sum is σ = 28560833280. Its totient is φ = 3624490752.

The previous prime is 11556700559. The next prime is 11556700577. The reversal of 11556700572 is 27500765511.

It is a super-2 number, since 2×11556700572² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11556700572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11556700577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837513 + ... + 851199.

It is an arithmetic number, because the mean of its divisors is an integer number (595017360).

Almost surely, 2^11556700572 is an apocalyptic number.

11556700572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11556700572 is an abundant number, since it is smaller than the sum of its proper divisors (17004132708).

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

11556700572 is a wasteful number, since it uses less digits than its factorization.

11556700572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17850 (or 17848 counting only the distinct ones).

The product of its (nonzero) digits is 73500, while the sum is 39.

The spelling of 11556700572 in words is "eleven billion, five hundred fifty-six million, seven hundred thousand, five hundred seventy-two".