11117479785 has 32 divisors (see below), whose sum is σ = 18790945920. Its totient is φ = 5597222400.

The previous prime is 11117479741. The next prime is 11117479831. The reversal of 11117479785 is 58797471111.

It is not a de Polignac number, because 11117479785 - 2²¹ = 11115382633 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10675 + ... + 149495.

It is an arithmetic number, because the mean of its divisors is an integer number (587217060).

Almost surely, 2^11117479785 is an apocalyptic number.

11117479785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11117479785 is a deficient number, since it is larger than the sum of its proper divisors (7673466135).

11117479785 is a wasteful number, since it uses less digits than its factorization.

11117479785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139129.

The product of its digits is 493920, while the sum is 51.

The spelling of 11117479785 in words is "eleven billion, one hundred seventeen million, four hundred seventy-nine thousand, seven hundred eighty-five".