11512431616 has 99 divisors (see below), whose sum is σ = 26826952359. Its totient is φ = 4923598848.

The previous prime is 11512431589. The next prime is 11512431641. The reversal of 11512431616 is 61613421511.

The square root of 11512431616 is 107296.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24034065 + ... + 24034543.

Almost surely, 2^11512431616 is an apocalyptic number.

11512431616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

11512431616 is the 107296-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11512431616

11512431616 is an abundant number, since it is smaller than the sum of its proper divisors (15314520743).

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

11512431616 is an frugal number, since it uses more digits than its factorization.

11512431616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992 (or 488 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The spelling of 11512431616 in words is "eleven billion, five hundred twelve million, four hundred thirty-one thousand, six hundred sixteen".