112991655587 has 4 divisors (see below), whose sum is σ = 113074313616. Its totient is φ = 112908997560.

The previous prime is 112991655533. The next prime is 112991655589. The reversal of 112991655587 is 785556199211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 112991655587 - 2⁶ = 112991655523 is a prime.

It is a super-2 number, since 2×112991655587² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (112991655589) 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, 41326964 + ... + 41329697.

It is an arithmetic number, because the mean of its divisors is an integer number (28268578404).

Almost surely, 2^112991655587 is an apocalyptic number.

112991655587 is a deficient number, since it is larger than the sum of its proper divisors (82658029).

112991655587 is an equidigital number, since it uses as much as digits as its factorization.

112991655587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82658028.

The product of its digits is 6804000, while the sum is 59.

The spelling of 112991655587 in words is "one hundred twelve billion, nine hundred ninety-one million, six hundred fifty-five thousand, five hundred eighty-seven".