11980615936 has 27 divisors (see below), whose sum is σ = 23917928853. Its totient is φ = 5989432320.

The previous prime is 11980615931. The next prime is 11980615937. The reversal of 11980615936 is 63951608911.

The square root of 11980615936 is 109456.

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

It can be written as a sum of positive squares in only one way, i.e., 9090478336 + 2890137600 = 95344^2 + 53760^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11980615936.

It is not an unprimeable number, because it can be changed into a prime (11980615931) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1747876 + ... + 1754716.

Almost surely, 2^11980615936 is an apocalyptic number.

11980615936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

11980615936 is the 109456-th square number.

It is an amenable number.

11980615936 is a deficient number, since it is larger than the sum of its proper divisors (11937312917).

11980615936 is an frugal number, since it uses more digits than its factorization.

11980615936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13698 (or 6843 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 49.

Multiplying 11980615936 by its sum of digits (49), we get a square (587050180864 = 766192²).

The spelling of 11980615936 in words is "eleven billion, nine hundred eighty million, six hundred fifteen thousand, nine hundred thirty-six".