11931942612 has 24 divisors (see below), whose sum is σ = 27889974112. Its totient is φ = 3970346400.

The previous prime is 11931942571. The next prime is 11931942623. The reversal of 11931942612 is 21624913911.

It is a super-2 number, since 2×11931942612² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863839 + ... + 877542.

Almost surely, 2^11931942612 is an apocalyptic number.

11931942612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11931942612 is an abundant number, since it is smaller than the sum of its proper divisors (15958031500).

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

11931942612 is a wasteful number, since it uses less digits than its factorization.

11931942612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1741959 (or 1741957 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The spelling of 11931942612 in words is "eleven billion, nine hundred thirty-one million, nine hundred forty-two thousand, six hundred twelve".