11638667862 has 24 divisors (see below), whose sum is σ = 25520937624. Its totient is φ = 3832813824.

The previous prime is 11638667837. The next prime is 11638667903. The reversal of 11638667862 is 26876683611.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11638667799 and 11638667808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3893643 + ... + 3896630.

It is an arithmetic number, because the mean of its divisors is an integer number (1063372401).

Almost surely, 2^11638667862 is an apocalyptic number.

11638667862 is an abundant number, since it is smaller than the sum of its proper divisors (13882269762).

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

11638667862 is a wasteful number, since it uses less digits than its factorization.

11638667862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7790364 (or 7790361 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 11638667862 in words is "eleven billion, six hundred thirty-eight million, six hundred sixty-seven thousand, eight hundred sixty-two".