11388117578 has 32 divisors (see below), whose sum is σ = 17925062400. Its totient is φ = 5421717504.

The previous prime is 11388117569. The next prime is 11388117583. The reversal of 11388117578 is 87571188311.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527378 + ... + 548546.

It is an arithmetic number, because the mean of its divisors is an integer number (560158200).

Almost surely, 2^11388117578 is an apocalyptic number.

11388117578 is a deficient number, since it is larger than the sum of its proper divisors (6536944822).

11388117578 is a wasteful number, since it uses less digits than its factorization.

11388117578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21374.

The product of its digits is 376320, while the sum is 50.

The spelling of 11388117578 in words is "eleven billion, three hundred eighty-eight million, one hundred seventeen thousand, five hundred seventy-eight".