12154679159281 has 4 divisors (see below), whose sum is σ = 12154691280112. Its totient is φ = 12154667038452.

The previous prime is 12154679159267. The next prime is 12154679159317. The reversal of 12154679159281 is 18295197645121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12154679159281 is a prime.

It is a super-2 number, since 2×12154679159281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12154679159201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4405611 + ... + 6612016.

It is an arithmetic number, because the mean of its divisors is an integer number (3038672820028).

Almost surely, 2^{12154679159281} is an apocalyptic number.

It is an amenable number.

12154679159281 is a deficient number, since it is larger than the sum of its proper divisors (12120831).

12154679159281 is a wasteful number, since it uses less digits than its factorization.

12154679159281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12120830.

The product of its digits is 10886400, while the sum is 61.

The spelling of 12154679159281 in words is "twelve trillion, one hundred fifty-four billion, six hundred seventy-nine million, one hundred fifty-nine thousand, two hundred eighty-one".