11512331620 has 12 divisors (see below), whose sum is σ = 24175896444. Its totient is φ = 4604932640.

The previous prime is 11512331599. The next prime is 11512331659. The reversal of 11512331620 is 2613321511.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2140542756 + 9371788864 = 46266^2 + 96808^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287808271 + ... + 287808310.

It is an arithmetic number, because the mean of its divisors is an integer number (2014658037).

Almost surely, 2^11512331620 is an apocalyptic number.

11512331620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11512331620 is an abundant number, since it is smaller than the sum of its proper divisors (12663564824).

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

11512331620 is a wasteful number, since it uses less digits than its factorization.

11512331620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575616590 (or 575616588 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The spelling of 11512331620 in words is "eleven billion, five hundred twelve million, three hundred thirty-one thousand, six hundred twenty".