11572165476 has 27 divisors (see below), whose sum is σ = 29253494361. Its totient is φ = 3857173344.

The previous prime is 11572165447. The next prime is 11572165477. The reversal of 11572165476 is 67456127511.

The square root of 11572165476 is 107574.

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

11572165476 is a `hidden beast` number, since 1 + 1 + 572 + 1 + 6 + 5 + 4 + 76 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6388165476 + 5184000000 = 79926^2 + 72000^2 .

It is not an unprimeable number, because it can be changed into a prime (11572165477) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 636480 + ... + 654408.

Almost surely, 2^11572165476 is an apocalyptic number.

11572165476 is the 107574-th square number.

It is an amenable number.

11572165476 is an abundant number, since it is smaller than the sum of its proper divisors (17681328885).

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

11572165476 is an frugal number, since it uses more digits than its factorization.

11572165476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35868 (or 17934 counting only the distinct ones).

The product of its digits is 352800, while the sum is 45.

The spelling of 11572165476 in words is "eleven billion, five hundred seventy-two million, one hundred sixty-five thousand, four hundred seventy-six".