11638479532698 has 12 divisors (see below), whose sum is σ = 25216705654218. Its totient is φ = 3879493177560.

The previous prime is 11638479532697. The next prime is 11638479532709. The reversal of 11638479532698 is 89623597483611.

11638479532698 is a `hidden beast` number, since 1 + 1 + 6 + 3 + 84 + 7 + 9 + 532 + 6 + 9 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11445954276969 + 192525255729 = 3383187^2 + 438777^2 .

It is not an unprimeable number, because it can be changed into a prime (11638479532697) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 323291098113 + ... + 323291098148.

Almost surely, 2^{11638479532698} is an apocalyptic number.

11638479532698 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11638479532698 is an abundant number, since it is smaller than the sum of its proper divisors (13578226121520).

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

11638479532698 is a wasteful number, since it uses less digits than its factorization.

11638479532698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646582196269 (or 646582196266 counting only the distinct ones).

The product of its digits is 470292480, while the sum is 72.

The spelling of 11638479532698 in words is "eleven trillion, six hundred thirty-eight billion, four hundred seventy-nine million, five hundred thirty-two thousand, six hundred ninety-eight".