11942315555 has 4 divisors (see below), whose sum is σ = 14330778672. Its totient is φ = 9553852440.

The previous prime is 11942315501. The next prime is 11942315557. The reversal of 11942315555 is 55551324911.

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

It is not a de Polignac number, because 11942315555 - 2²⁰ = 11941266979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11942315557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1194231551 + ... + 1194231560.

It is an arithmetic number, because the mean of its divisors is an integer number (3582694668).

Almost surely, 2^11942315555 is an apocalyptic number.

11942315555 is a deficient number, since it is larger than the sum of its proper divisors (2388463117).

11942315555 is an equidigital number, since it uses as much as digits as its factorization.

11942315555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388463116.

The product of its digits is 135000, while the sum is 41.

The spelling of 11942315555 in words is "eleven billion, nine hundred forty-two million, three hundred fifteen thousand, five hundred fifty-five".