11505994756 has 9 divisors (see below), whose sum is σ = 20135866261. Its totient is φ = 5752890112.

The previous prime is 11505994741. The next prime is 11505994763. The reversal of 11505994756 is 65749950511.

The square root of 11505994756 is 107266.

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., 1741392900 + 9764601856 = 41730^2 + 98816^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 187716 + ... + 241348.

Almost surely, 2^11505994756 is an apocalyptic number.

11505994756 is the 107266-th square number.

It is an amenable number.

11505994756 is a deficient number, since it is larger than the sum of its proper divisors (8629871505).

11505994756 is an frugal number, since it uses more digits than its factorization.

11505994756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107270 (or 53635 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 52.

The spelling of 11505994756 in words is "eleven billion, five hundred five million, nine hundred ninety-four thousand, seven hundred fifty-six".