12557541320 has 16 divisors (see below), whose sum is σ = 28254468060. Its totient is φ = 5023016512.

The previous prime is 12557541289. The next prime is 12557541431. The reversal of 12557541320 is 2314575521.

It can be written as a sum of positive squares in 2 ways, for example, as 11188985284 + 1368556036 = 105778^2 + 36994^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156969227 + ... + 156969306.

Almost surely, 2^12557541320 is an apocalyptic number.

12557541320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12557541320 is an abundant number, since it is smaller than the sum of its proper divisors (15696926740).

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

12557541320 is a wasteful number, since it uses less digits than its factorization.

12557541320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313938544 (or 313938540 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 35.

The spelling of 12557541320 in words is "twelve billion, five hundred fifty-seven million, five hundred forty-one thousand, three hundred twenty".