12557242077340 has 24 divisors (see below), whose sum is σ = 26559922097520. Its totient is φ = 4986760881408.

The previous prime is 12557242077329. The next prime is 12557242077349. The reversal of 12557242077340 is 4377024275521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12557242077349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2258493997 + ... + 2258499556.

It is an arithmetic number, because the mean of its divisors is an integer number (1106663420730).

Almost surely, 2^{12557242077340} is an apocalyptic number.

12557242077340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12557242077340 is an abundant number, since it is smaller than the sum of its proper divisors (14002680020180).

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

12557242077340 is a wasteful number, since it uses less digits than its factorization.

12557242077340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4516993701 (or 4516993699 counting only the distinct ones).

The product of its (nonzero) digits is 3292800, while the sum is 49.

The spelling of 12557242077340 in words is "twelve trillion, five hundred fifty-seven billion, two hundred forty-two million, seventy-seven thousand, three hundred forty".