255557323842 has 16 divisors (see below), whose sum is σ = 516383872032. Its totient is φ = 84307570560.

The previous prime is 255557323837. The next prime is 255557323859. The reversal of 255557323842 is 248323755552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219550384 + ... + 219551547.

It is an arithmetic number, because the mean of its divisors is an integer number (32273992002).

Almost surely, 2^255557323842 is an apocalyptic number.

255557323842 is an abundant number, since it is smaller than the sum of its proper divisors (260826548190).

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

255557323842 is a wasteful number, since it uses less digits than its factorization.

255557323842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439102033.

The product of its digits is 10080000, while the sum is 51.

The spelling of 255557323842 in words is "two hundred fifty-five billion, five hundred fifty-seven million, three hundred twenty-three thousand, eight hundred forty-two".