12149979907959 has 6 divisors (see below), whose sum is σ = 17549970978176. Its totient is φ = 8099986605300.

The previous prime is 12149979907957. The next prime is 12149979907981. The reversal of 12149979907959 is 95970997994121.

12149979907959 is a `hidden beast` number, since 1 + 2 + 1 + 499 + 7 + 9 + 9 + 0 + 79 + 59 = 666.

It is not a de Polignac number, because 12149979907959 - 2¹ = 12149979907957 is a prime.

It is a super-2 number, since 2×12149979907959² (a number of 27 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 (12149979907957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 674998883767 + ... + 674998883784.

Almost surely, 2^{12149979907959} is an apocalyptic number.

12149979907959 is a deficient number, since it is larger than the sum of its proper divisors (5399991070217).

12149979907959 is a wasteful number, since it uses less digits than its factorization.

12149979907959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349997767557 (or 1349997767554 counting only the distinct ones).

The product of its (nonzero) digits is 1041624360, while the sum is 81.

The spelling of 12149979907959 in words is "twelve trillion, one hundred forty-nine billion, nine hundred seventy-nine million, nine hundred seven thousand, nine hundred fifty-nine".