11771824772 has 12 divisors (see below), whose sum is σ = 20603946636. Its totient is φ = 5884982880.

The previous prime is 11771824747. The next prime is 11771824807. The reversal of 11771824772 is 27742817711.

It can be written as a sum of positive squares in 2 ways, for example, as 8953701376 + 2818123396 = 94624^2 + 53086^2 .

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, 203483 + ... + 254850.

It is an arithmetic number, because the mean of its divisors is an integer number (1716995553).

Almost surely, 2^11771824772 is an apocalyptic number.

It is an amenable number.

11771824772 is a deficient number, since it is larger than the sum of its proper divisors (8832121864).

11771824772 is a wasteful number, since it uses less digits than its factorization.

11771824772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464758 (or 464756 counting only the distinct ones).

The product of its digits is 307328, while the sum is 47.

The spelling of 11771824772 in words is "eleven billion, seven hundred seventy-one million, eight hundred twenty-four thousand, seven hundred seventy-two".