16113891087 has 42 divisors (see below), whose sum is σ = 27626729208. Its totient is φ = 9202756032.

The previous prime is 16113891083. The next prime is 16113891107. The reversal of 16113891087 is 78019831161.

16113891087 is a `hidden beast` number, since 161 + 1 + 389 + 108 + 7 = 666.

It is not a de Polignac number, because 16113891087 - 2² = 16113891083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16113891083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 9067143 + ... + 9068919.

Almost surely, 2^16113891087 is an apocalyptic number.

16113891087 is a deficient number, since it is larger than the sum of its proper divisors (11512838121).

16113891087 is an frugal number, since it uses more digits than its factorization.

16113891087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3579 (or 1787 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 45.

The spelling of 16113891087 in words is "sixteen billion, one hundred thirteen million, eight hundred ninety-one thousand, eighty-seven".