11638758008 has 32 divisors (see below), whose sum is σ = 23272628400. Its totient is φ = 5437650432.

The previous prime is 11638757981. The next prime is 11638758071. The reversal of 11638758008 is 80085783611.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 288935 + ... + 326742.

Almost surely, 2^11638758008 is an apocalyptic number.

It is an amenable number.

11638758008 is a deficient number, since it is larger than the sum of its proper divisors (11633870392).

11638758008 is a wasteful number, since it uses less digits than its factorization.

11638758008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615839 (or 615835 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 11638758008 in words is "eleven billion, six hundred thirty-eight million, seven hundred fifty-eight thousand, eight".