11715610571155 has 4 divisors (see below), whose sum is σ = 14058732685392. Its totient is φ = 9372488456920.

The previous prime is 11715610571149. The next prime is 11715610571179. The reversal of 11715610571155 is 55117501651711.

11715610571155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11715610571155 - 2²⁹ = 11715073700243 is a prime.

It is a Duffinian 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, 1171561057111 + ... + 1171561057120.

It is an arithmetic number, because the mean of its divisors is an integer number (3514683171348).

Almost surely, 2^{11715610571155} is an apocalyptic number.

11715610571155 is a deficient number, since it is larger than the sum of its proper divisors (2343122114237).

11715610571155 is an equidigital number, since it uses as much as digits as its factorization.

11715610571155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343122114236.

The product of its (nonzero) digits is 183750, while the sum is 46.

The spelling of 11715610571155 in words is "eleven trillion, seven hundred fifteen billion, six hundred ten million, five hundred seventy-one thousand, one hundred fifty-five".