12091886154 has 24 divisors (see below), whose sum is σ = 26405383680. Its totient is φ = 3998890728.

The previous prime is 12091886143. The next prime is 12091886203. The reversal of 12091886154 is 45168819021.

It is a happy number.

12091886154 is a `hidden beast` number, since 1 + 20 + 9 + 1 + 8 + 8 + 615 + 4 = 666.

It is a super-2 number, since 2×12091886154² (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 11 ways as a sum of consecutive naturals, for example, 2642484 + ... + 2647055.

It is an arithmetic number, because the mean of its divisors is an integer number (1100224320).

Almost surely, 2^12091886154 is an apocalyptic number.

12091886154 is an abundant number, since it is smaller than the sum of its proper divisors (14313497526).

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

12091886154 is a wasteful number, since it uses less digits than its factorization.

12091886154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5289674 (or 5289671 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 12091886154 in words is "twelve billion, ninety-one million, eight hundred eighty-six thousand, one hundred fifty-four".