557742978651 has 12 divisors (see below), whose sum is σ = 745656927288. Its totient is φ = 370831515264.

The previous prime is 557742978601. The next prime is 557742978671. The reversal of 557742978651 is 156879247755.

It is not a de Polignac number, because 557742978651 - 2⁹ = 557742978139 is a prime.

It is a super-2 number, since 2×557742978651² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557742978601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 250750 + ... + 1085523.

It is an arithmetic number, because the mean of its divisors is an integer number (62138077274).

Almost surely, 2^557742978651 is an apocalyptic number.

557742978651 is a deficient number, since it is larger than the sum of its proper divisors (187913948637).

557742978651 is an equidigital number, since it uses as much as digits as its factorization.

557742978651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337022 (or 1336649 counting only the distinct ones).

The product of its digits is 148176000, while the sum is 66.

The spelling of 557742978651 in words is "five hundred fifty-seven billion, seven hundred forty-two million, nine hundred seventy-eight thousand, six hundred fifty-one".