11311574772 has 24 divisors (see below), whose sum is σ = 26826359392. Its totient is φ = 3708712800.

The previous prime is 11311574759. The next prime is 11311574819. The reversal of 11311574772 is 27747511311.

It is a self number, because there is not a number n which added to its sum of digits gives 11311574772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7725754 + ... + 7727217.

Almost surely, 2^11311574772 is an apocalyptic number.

11311574772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11311574772 is an abundant number, since it is smaller than the sum of its proper divisors (15514784620).

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

11311574772 is a wasteful number, since it uses less digits than its factorization.

11311574772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15453039 (or 15453037 counting only the distinct ones).

The product of its digits is 41160, while the sum is 39.

The spelling of 11311574772 in words is "eleven billion, three hundred eleven million, five hundred seventy-four thousand, seven hundred seventy-two".