113515661111 has 4 divisors (see below), whose sum is σ = 113519645472. Its totient is φ = 113511676752.

The previous prime is 113515661099. The next prime is 113515661153. The reversal of 113515661111 is 111166515311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111166515311 = 17 ⋅6539206783.

It is a cyclic number.

It is not a de Polignac number, because 113515661111 - 2³⁰ = 112441919287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113515661011) 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, 1949135 + ... + 2006528.

It is an arithmetic number, because the mean of its divisors is an integer number (28379911368).

Almost surely, 2^113515661111 is an apocalyptic number.

113515661111 is a deficient number, since it is larger than the sum of its proper divisors (3984361).

113515661111 is an equidigital number, since it uses as much as digits as its factorization.

113515661111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3984360.

The product of its digits is 2700, while the sum is 32.

The spelling of 113515661111 in words is "one hundred thirteen billion, five hundred fifteen million, six hundred sixty-one thousand, one hundred eleven".