12154215504 has 20 divisors (see below), whose sum is σ = 31398390176. Its totient is φ = 4051405152.

The previous prime is 12154215481. The next prime is 12154215509. The reversal of 12154215504 is 40551245121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154215509) 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, 126606364 + ... + 126606459.

Almost surely, 2^12154215504 is an apocalyptic number.

It is an amenable number.

12154215504 is an abundant number, since it is smaller than the sum of its proper divisors (19244174672).

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

12154215504 is a wasteful number, since it uses less digits than its factorization.

12154215504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253212834 (or 253212828 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 12154215504 in words is "twelve billion, one hundred fifty-four million, two hundred fifteen thousand, five hundred four".