11572957899 has 6 divisors (see below), whose sum is σ = 16716494756. Its totient is φ = 7715305260.

The previous prime is 11572957873. The next prime is 11572957933. The reversal of 11572957899 is 99875927511.

11572957899 is a `hidden beast` number, since 1 + 1 + 57 + 2 + 9 + 578 + 9 + 9 = 666.

It is not a de Polignac number, because 11572957899 - 2⁵ = 11572957867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11572957829) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 642942097 + ... + 642942114.

Almost surely, 2^11572957899 is an apocalyptic number.

11572957899 is a deficient number, since it is larger than the sum of its proper divisors (5143536857).

11572957899 is a wasteful number, since it uses less digits than its factorization.

11572957899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285884217 (or 1285884214 counting only the distinct ones).

The product of its digits is 14288400, while the sum is 63.

The spelling of 11572957899 in words is "eleven billion, five hundred seventy-two million, nine hundred fifty-seven thousand, eight hundred ninety-nine".