11855079899 has 16 divisors (see below), whose sum is σ = 12856718784. Its totient is φ = 10866441600.

The previous prime is 11855079823. The next prime is 11855079917. The reversal of 11855079899 is 99897055811.

It is a cyclic number.

It is not a de Polignac number, because 11855079899 - 2²⁴ = 11838302683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11855079809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1744889 + ... + 1751669.

It is an arithmetic number, because the mean of its divisors is an integer number (803544924).

Almost surely, 2^11855079899 is an apocalyptic number.

11855079899 is a deficient number, since it is larger than the sum of its proper divisors (1001638885).

11855079899 is a wasteful number, since it uses less digits than its factorization.

11855079899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7718.

The product of its (nonzero) digits is 8164800, while the sum is 62.

The spelling of 11855079899 in words is "eleven billion, eight hundred fifty-five million, seventy-nine thousand, eight hundred ninety-nine".