11611166572 has 12 divisors (see below), whose sum is σ = 20395080720. Its totient is φ = 5784000656.

The previous prime is 11611166569. The next prime is 11611166599. The reversal of 11611166572 is 27566111611.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5394448 + ... + 5396599.

It is an arithmetic number, because the mean of its divisors is an integer number (1699590060).

Almost surely, 2^11611166572 is an apocalyptic number.

It is an amenable number.

11611166572 is a deficient number, since it is larger than the sum of its proper divisors (8783914148).

11611166572 is a wasteful number, since it uses less digits than its factorization.

11611166572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10791320 (or 10791318 counting only the distinct ones).

The product of its digits is 15120, while the sum is 37.

The spelling of 11611166572 in words is "eleven billion, six hundred eleven million, one hundred sixty-six thousand, five hundred seventy-two".