11811687715 has 8 divisors (see below), whose sum is σ = 14178338928. Its totient is φ = 9446474400.

The previous prime is 11811687707. The next prime is 11811687739. The reversal of 11811687715 is 51778611811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11811687715 - 2³ = 11811687707 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341317 + ... + 374326.

It is an arithmetic number, because the mean of its divisors is an integer number (1772292366).

Almost surely, 2^11811687715 is an apocalyptic number.

11811687715 is a deficient number, since it is larger than the sum of its proper divisors (2366651213).

11811687715 is an equidigital number, since it uses as much as digits as its factorization.

11811687715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 718949.

The product of its digits is 94080, while the sum is 46.

The spelling of 11811687715 in words is "eleven billion, eight hundred eleven million, six hundred eighty-seven thousand, seven hundred fifteen".