11712991715 has 8 divisors (see below), whose sum is σ = 14194754928. Its totient is φ = 9277616800.

The previous prime is 11712991673. The next prime is 11712991723. The reversal of 11712991715 is 51719921711.

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

It is not a de Polignac number, because 11712991715 - 2¹² = 11712987619 is a prime.

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, 11596517 + ... + 11597526.

It is an arithmetic number, because the mean of its divisors is an integer number (1774344366).

Almost surely, 2^11712991715 is an apocalyptic number.

11712991715 is a deficient number, since it is larger than the sum of its proper divisors (2481763213).

11712991715 is a wasteful number, since it uses less digits than its factorization.

11712991715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23194149.

The product of its digits is 39690, while the sum is 44.

The spelling of 11712991715 in words is "eleven billion, seven hundred twelve million, nine hundred ninety-one thousand, seven hundred fifteen".