11638879468 has 6 divisors (see below), whose sum is σ = 20368039076. Its totient is φ = 5819439732.

The previous prime is 11638879453. The next prime is 11638879477. The reversal of 11638879468 is 86497883611.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1454859930 + ... + 1454859937.

Almost surely, 2^11638879468 is an apocalyptic number.

It is an amenable number.

11638879468 is a deficient number, since it is larger than the sum of its proper divisors (8729159608).

11638879468 is a wasteful number, since it uses less digits than its factorization.

11638879468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2909719871 (or 2909719869 counting only the distinct ones).

The product of its digits is 13934592, while the sum is 61.

The spelling of 11638879468 in words is "eleven billion, six hundred thirty-eight million, eight hundred seventy-nine thousand, four hundred sixty-eight".