11937921900 has 72 divisors (see below), whose sum is σ = 36572190480. Its totient is φ = 2996183040.

The previous prime is 11937921899. The next prime is 11937921923. The reversal of 11937921900 is 912973911.

It is a super-2 number, since 2×11937921900² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1165285 + ... + 1175484.

It is an arithmetic number, because the mean of its divisors is an integer number (507947090).

Almost surely, 2^11937921900 is an apocalyptic number.

11937921900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11937921900 is an abundant number, since it is smaller than the sum of its proper divisors (24634268580).

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

11937921900 is a wasteful number, since it uses less digits than its factorization.

11937921900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2340803 (or 2340796 counting only the distinct ones).

The product of its (nonzero) digits is 30618, while the sum is 42.

The spelling of 11937921900 in words is "eleven billion, nine hundred thirty-seven million, nine hundred twenty-one thousand, nine hundred".