12154679159279 has 32 divisors (see below), whose sum is σ = 13040703350784. Its totient is φ = 11302527075840.

The previous prime is 12154679159267. The next prime is 12154679159317. The reversal of 12154679159279 is 97295197645121.

It is a cyclic number.

It is not a de Polignac number, because 12154679159279 - 2²⁰ = 12154678110703 is a prime.

It is a super-2 number, since 2×12154679159279² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154679159239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 541472234 + ... + 541494680.

It is an arithmetic number, because the mean of its divisors is an integer number (407521979712).

Almost surely, 2^{12154679159279} is an apocalyptic number.

12154679159279 is a deficient number, since it is larger than the sum of its proper divisors (886024191505).

12154679159279 is a wasteful number, since it uses less digits than its factorization.

12154679159279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26567.

The product of its digits is 85730400, while the sum is 68.

The spelling of 12154679159279 in words is "twelve trillion, one hundred fifty-four billion, six hundred seventy-nine million, one hundred fifty-nine thousand, two hundred seventy-nine".