11975392512 has 90 divisors (see below), whose sum is σ = 35708515458. Its totient is φ = 3991790592.

The previous prime is 11975392511. The next prime is 11975392547. The reversal of 11975392512 is 21529357911.

11975392512 is a `hidden beast` number, since 1 + 1 + 97 + 539 + 25 + 1 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8334959616 + 3640432896 = 91296^2 + 60336^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11975392511) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 268023 + ... + 309494.

Almost surely, 2^11975392512 is an apocalyptic number.

11975392512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11975392512 is an abundant number, since it is smaller than the sum of its proper divisors (23733122946).

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

11975392512 is an frugal number, since it uses more digits than its factorization.

11975392512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577545 (or 577522 counting only the distinct ones).

The product of its digits is 170100, while the sum is 45.

The spelling of 11975392512 in words is "eleven billion, nine hundred seventy-five million, three hundred ninety-two thousand, five hundred twelve".