11611812115 has 12 divisors (see below), whose sum is σ = 13954080672. Its totient is φ = 9276195680.

The previous prime is 11611812061. The next prime is 11611812127. The reversal of 11611812115 is 51121811611.

It is a de Polignac number, because none of the positive numbers 2^k-11611812115 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5627574 + ... + 5629636.

It is an arithmetic number, because the mean of its divisors is an integer number (1162840056).

Almost surely, 2^11611812115 is an apocalyptic number.

11611812115 is a deficient number, since it is larger than the sum of its proper divisors (2342268557).

11611812115 is an frugal number, since it uses more digits than its factorization.

11611812115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4190 (or 3129 counting only the distinct ones).

The product of its digits is 480, while the sum is 28.

The spelling of 11611812115 in words is "eleven billion, six hundred eleven million, eight hundred twelve thousand, one hundred fifteen".