557156666988 has 72 divisors (see below), whose sum is σ = 1410267156480. Its totient is φ = 185468680800.

The previous prime is 557156666981. The next prime is 557156666993. The reversal of 557156666988 is 889666651755.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (557156666981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137533563 + ... + 137537613.

It is an arithmetic number, because the mean of its divisors is an integer number (19587043840).

Almost surely, 2^557156666988 is an apocalyptic number.

It is an amenable number.

557156666988 is an abundant number, since it is smaller than the sum of its proper divisors (853110489492).

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

557156666988 is a wasteful number, since it uses less digits than its factorization.

557156666988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8267 (or 8262 counting only the distinct ones).

The product of its digits is 653184000, while the sum is 72.

The spelling of 557156666988 in words is "five hundred fifty-seven billion, one hundred fifty-six million, six hundred sixty-six thousand, nine hundred eighty-eight".