11521554200 has 48 divisors (see below), whose sum is σ = 28848205680. Its totient is φ = 4254111360.

The previous prime is 11521554199. The next prime is 11521554227. The reversal of 11521554200 is 245512511.

It is a super-2 number, since 2×11521554200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 11521554200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2213084 + ... + 2218283.

It is an arithmetic number, because the mean of its divisors is an integer number (601004285).

Almost surely, 2^11521554200 is an apocalyptic number.

11521554200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11521554200 is an abundant number, since it is smaller than the sum of its proper divisors (17326651480).

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

11521554200 is a wasteful number, since it uses less digits than its factorization.

11521554200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4431396 (or 4431387 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 26.

The spelling of 11521554200 in words is "eleven billion, five hundred twenty-one million, five hundred fifty-four thousand, two hundred".