12154679159639 has 2 divisors, whose sum is σ = 12154679159640. Its totient is φ = 12154679159638.

The previous prime is 12154679159627. The next prime is 12154679159671. The reversal of 12154679159639 is 93695197645121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12154679159639 is a prime.

It is a super-2 number, since 2×12154679159639² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12154679159239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6077339579819 + 6077339579820.

It is an arithmetic number, because the mean of its divisors is an integer number (6077339579820).

Almost surely, 2^{12154679159639} is an apocalyptic number.

12154679159639 is a deficient number, since it is larger than the sum of its proper divisors (1).

12154679159639 is an equidigital number, since it uses as much as digits as its factorization.

12154679159639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110224800, while the sum is 68.

The spelling of 12154679159639 in words is "twelve trillion, one hundred fifty-four billion, six hundred seventy-nine million, one hundred fifty-nine thousand, six hundred thirty-nine".