557115685728 has 144 divisors (see below), whose sum is σ = 1705239439344. Its totient is φ = 158797255680.

The previous prime is 557115685699. The next prime is 557115685733. The reversal of 557115685728 is 827586511755.

It is a happy number.

557115685728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1839726 + ... + 2121042.

It is an arithmetic number, because the mean of its divisors is an integer number (11841940551).

Almost surely, 2^557115685728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 557115685728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (852619719672).

557115685728 is an abundant number, since it is smaller than the sum of its proper divisors (1148123753616).

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

557115685728 is a wasteful number, since it uses less digits than its factorization.

557115685728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281765 (or 281750 counting only the distinct ones).

The product of its digits is 23520000, while the sum is 60.

The spelling of 557115685728 in words is "five hundred fifty-seven billion, one hundred fifteen million, six hundred eighty-five thousand, seven hundred twenty-eight".