11531355792 has 40 divisors (see below), whose sum is σ = 32497458720. Its totient is φ = 3494350080.

The previous prime is 11531355769. The next prime is 11531355883. The reversal of 11531355792 is 29755313511.

It is a happy 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, 10919317 + ... + 10920372.

It is an arithmetic number, because the mean of its divisors is an integer number (812436468).

Almost surely, 2^11531355792 is an apocalyptic number.

11531355792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11531355792 is an abundant number, since it is smaller than the sum of its proper divisors (20966102928).

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

11531355792 is a wasteful number, since it uses less digits than its factorization.

11531355792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21839711 (or 21839705 counting only the distinct ones).

The product of its digits is 141750, while the sum is 42.

The spelling of 11531355792 in words is "eleven billion, five hundred thirty-one million, three hundred fifty-five thousand, seven hundred ninety-two".