11644031788 has 12 divisors (see below), whose sum is σ = 20425691160. Its totient is φ = 5808120032.

The previous prime is 11644031771. The next prime is 11644031813. The reversal of 11644031788 is 88713044611.

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, 3472081 + ... + 3475432.

It is an arithmetic number, because the mean of its divisors is an integer number (1702140930).

Almost surely, 2^11644031788 is an apocalyptic number.

It is an amenable number.

11644031788 is a deficient number, since it is larger than the sum of its proper divisors (8781659372).

11644031788 is a wasteful number, since it uses less digits than its factorization.

11644031788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6947936 (or 6947934 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 11644031788 in words is "eleven billion, six hundred forty-four million, thirty-one thousand, seven hundred eighty-eight".