12554043516 has 72 divisors (see below), whose sum is σ = 38400616800. Its totient is φ = 3375876096.

The previous prime is 12554043493. The next prime is 12554043521. The reversal of 12554043516 is 61534045521.

12554043516 is a `hidden beast` number, since 1 + 25 + 540 + 43 + 51 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1460941 + ... + 1469508.

It is an arithmetic number, because the mean of its divisors is an integer number (533341900).

Almost surely, 2^12554043516 is an apocalyptic number.

It is an amenable number.

12554043516 is an abundant number, since it is smaller than the sum of its proper divisors (25846573284).

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

12554043516 is a wasteful number, since it uses less digits than its factorization.

12554043516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930483 (or 2930478 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The spelling of 12554043516 in words is "twelve billion, five hundred fifty-four million, forty-three thousand, five hundred sixteen".