11991876900 has 36 divisors (see below), whose sum is σ = 34696498032. Its totient is φ = 3197833760.

The previous prime is 11991876893. The next prime is 11991876907. The reversal of 11991876900 is 967819911.

It is an interprime number because it is at equal distance from previous prime (11991876893) and next prime (11991876907).

It is a super-2 number, since 2×11991876900² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11991876907) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19986162 + ... + 19986761.

It is an arithmetic number, because the mean of its divisors is an integer number (963791612).

Almost surely, 2^11991876900 is an apocalyptic number.

11991876900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11991876900 is an abundant number, since it is smaller than the sum of its proper divisors (22704621132).

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

11991876900 is a wasteful number, since it uses less digits than its factorization.

11991876900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39972940 (or 39972933 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 51.

The spelling of 11991876900 in words is "eleven billion, nine hundred ninety-one million, eight hundred seventy-six thousand, nine hundred".