11915730899 has 4 divisors (see below), whose sum is σ = 12616656264. Its totient is φ = 11214805536.

The previous prime is 11915730887. The next prime is 11915730901. The reversal of 11915730899 is 99803751911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99803751911 = 223 ⋅447550457.

It is a cyclic number.

It is not a de Polignac number, because 11915730899 - 2⁸ = 11915730643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11915730899.

It is not an unprimeable number, because it can be changed into a prime (11915730839) 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, 350462657 + ... + 350462690.

It is an arithmetic number, because the mean of its divisors is an integer number (3154164066).

Almost surely, 2^11915730899 is an apocalyptic number.

11915730899 is a deficient number, since it is larger than the sum of its proper divisors (700925365).

11915730899 is an equidigital number, since it uses as much as digits as its factorization.

11915730899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700925364.

The product of its (nonzero) digits is 612360, while the sum is 53.

The spelling of 11915730899 in words is "eleven billion, nine hundred fifteen million, seven hundred thirty thousand, eight hundred ninety-nine".