11564788475 has 12 divisors (see below), whose sum is σ = 15183887544. Its totient is φ = 8707605120.

The previous prime is 11564788471. The next prime is 11564788481. The reversal of 11564788475 is 57488746511.

It is not a de Polignac number, because 11564788475 - 2² = 11564788471 is a prime.

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 11564788475.

It is not an unprimeable number, because it can be changed into a prime (11564788471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13605209 + ... + 13606058.

It is an arithmetic number, because the mean of its divisors is an integer number (1265323962).

Almost surely, 2^11564788475 is an apocalyptic number.

11564788475 is a deficient number, since it is larger than the sum of its proper divisors (3619099069).

11564788475 is a wasteful number, since it uses less digits than its factorization.

11564788475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27211294 (or 27211289 counting only the distinct ones).

The product of its digits is 7526400, while the sum is 56.

The spelling of 11564788475 in words is "eleven billion, five hundred sixty-four million, seven hundred eighty-eight thousand, four hundred seventy-five".