12072544557 has 16 divisors (see below), whose sum is σ = 16213248000. Its totient is φ = 7990250544.

The previous prime is 12072544513. The next prime is 12072544559. The reversal of 12072544557 is 75544527021.

It is not a de Polignac number, because 12072544557 - 2⁸ = 12072544301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12072544559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314244 + ... + 350562.

It is an arithmetic number, because the mean of its divisors is an integer number (1013328000).

Almost surely, 2^12072544557 is an apocalyptic number.

It is an amenable number.

12072544557 is a deficient number, since it is larger than the sum of its proper divisors (4140703443).

12072544557 is a wasteful number, since it uses less digits than its factorization.

12072544557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37120.

The product of its (nonzero) digits is 392000, while the sum is 42.

The spelling of 12072544557 in words is "twelve billion, seventy-two million, five hundred forty-four thousand, five hundred fifty-seven".