16113631687 has 4 divisors (see below), whose sum is σ = 16506647136. Its totient is φ = 15720616240.

The previous prime is 16113631643. The next prime is 16113631693. The reversal of 16113631687 is 78613631161.

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 16113631687 - 2⁷ = 16113631559 is a prime.

It is a super-2 number, since 2×16113631687² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16113631627) 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, 196507663 + ... + 196507744.

It is an arithmetic number, because the mean of its divisors is an integer number (4126661784).

Almost surely, 2^16113631687 is an apocalyptic number.

16113631687 is a deficient number, since it is larger than the sum of its proper divisors (393015449).

16113631687 is an equidigital number, since it uses as much as digits as its factorization.

16113631687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393015448.

The product of its digits is 108864, while the sum is 43.

The spelling of 16113631687 in words is "sixteen billion, one hundred thirteen million, six hundred thirty-one thousand, six hundred eighty-seven".