12491500167 has 12 divisors (see below), whose sum is σ = 18312581560. Its totient is φ = 8203372848.

The previous prime is 12491500157. The next prime is 12491500211. The reversal of 12491500167 is 76100519421.

12491500167 is a `hidden beast` number, since 1 + 2 + 4 + 91 + 500 + 1 + 67 = 666.

It is not a de Polignac number, because 12491500167 - 2⁶ = 12491500103 is a prime.

It is a super-2 number, since 2×12491500167² (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 (12491500157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10357192 + ... + 10358397.

Almost surely, 2^12491500167 is an apocalyptic number.

12491500167 is a deficient number, since it is larger than the sum of its proper divisors (5821081393).

12491500167 is a wasteful number, since it uses less digits than its factorization.

12491500167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20715662 (or 20715659 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 12491500167 in words is "twelve billion, four hundred ninety-one million, five hundred thousand, one hundred sixty-seven".