11617355615 has 4 divisors (see below), whose sum is σ = 13940826744. Its totient is φ = 9293884488.

The previous prime is 11617355609. The next prime is 11617355627. The reversal of 11617355615 is 51655371611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11617355615 - 2¹⁶ = 11617290079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161735557 + ... + 1161735566.

It is an arithmetic number, because the mean of its divisors is an integer number (3485206686).

Almost surely, 2^11617355615 is an apocalyptic number.

11617355615 is a deficient number, since it is larger than the sum of its proper divisors (2323471129).

11617355615 is an equidigital number, since it uses as much as digits as its factorization.

11617355615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323471128.

The product of its digits is 94500, while the sum is 41.

The spelling of 11617355615 in words is "eleven billion, six hundred seventeen million, three hundred fifty-five thousand, six hundred fifteen".