12154868154 has 64 divisors (see below), whose sum is σ = 31733009280. Its totient is φ = 3399960960.

The previous prime is 12154868111. The next prime is 12154868191. The reversal of 12154868154 is 45186845121.

12154868154 is a `hidden beast` number, since 1 + 2 + 15 + 486 + 8 + 154 = 666.

It is a super-2 number, since 2×12154868154² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 779307 + ... + 794750.

It is an arithmetic number, because the mean of its divisors is an integer number (495828270).

Almost surely, 2^12154868154 is an apocalyptic number.

12154868154 is an abundant number, since it is smaller than the sum of its proper divisors (19578141126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12154868154 is a wasteful number, since it uses less digits than its factorization.

12154868154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574092 (or 1574086 counting only the distinct ones).

The product of its digits is 307200, while the sum is 45.

The spelling of 12154868154 in words is "twelve billion, one hundred fifty-four million, eight hundred sixty-eight thousand, one hundred fifty-four".