12279154554 has 32 divisors (see below), whose sum is σ = 28024501440. Its totient is φ = 3982427856.

The previous prime is 12279154483. The next prime is 12279154577. The reversal of 12279154554 is 45545197221.

12279154554 is a `hidden beast` number, since 1 + 2 + 2 + 7 + 91 + 5 + 4 + 554 = 666.

It is a super-2 number, since 2×12279154554² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3070864 + ... + 3074859.

It is an arithmetic number, because the mean of its divisors is an integer number (875765670).

Almost surely, 2^12279154554 is an apocalyptic number.

12279154554 is an abundant number, since it is smaller than the sum of its proper divisors (15745346886).

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

12279154554 is a wasteful number, since it uses less digits than its factorization.

12279154554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6145771 (or 6145765 counting only the distinct ones).

The product of its digits is 504000, while the sum is 45.

The spelling of 12279154554 in words is "twelve billion, two hundred seventy-nine million, one hundred fifty-four thousand, five hundred fifty-four".