13156631667 has 6 divisors (see below), whose sum is σ = 19004023532. Its totient is φ = 8771087772.

The previous prime is 13156631647. The next prime is 13156631689. The reversal of 13156631667 is 76613665131.

It is a happy number.

13156631667 is a `hidden beast` number, since 1 + 3 + 1 + 5 + 6 + 631 + 6 + 6 + 7 = 666.

It is not a de Polignac number, because 13156631667 - 2¹⁹ = 13156107379 is a prime.

It is a super-2 number, since 2×13156631667² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13156631627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 730923973 + ... + 730923990.

Almost surely, 2^13156631667 is an apocalyptic number.

13156631667 is a deficient number, since it is larger than the sum of its proper divisors (5847391865).

13156631667 is a wasteful number, since it uses less digits than its factorization.

13156631667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461847969 (or 1461847966 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The spelling of 13156631667 in words is "thirteen billion, one hundred fifty-six million, six hundred thirty-one thousand, six hundred sixty-seven".