11977692912 has 100 divisors (see below), whose sum is σ = 35184590056. Its totient is φ = 3932945280.

The previous prime is 11977692901. The next prime is 11977692931. The reversal of 11977692912 is 21929677911.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17862 + ... + 155802.

Almost surely, 2^11977692912 is an apocalyptic number.

11977692912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11977692912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17592295028).

11977692912 is an abundant number, since it is smaller than the sum of its proper divisors (23206897144).

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

11977692912 is a wasteful number, since it uses less digits than its factorization.

11977692912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138028 (or 138013 counting only the distinct ones).

The product of its digits is 857304, while the sum is 54.

The spelling of 11977692912 in words is "eleven billion, nine hundred seventy-seven million, six hundred ninety-two thousand, nine hundred twelve".