557790453891 has 24 divisors (see below), whose sum is σ = 886720803696. Its totient is φ = 335063178240.

The previous prime is 557790453889. The next prime is 557790453917. The reversal of 557790453891 is 198354097755.

557790453891 is a `hidden beast` number, since 5 + 5 + 7 + 7 + 9 + 0 + 4 + 538 + 91 = 666.

It is not a de Polignac number, because 557790453891 - 2¹ = 557790453889 is a prime.

It is a super-2 number, since 2×557790453891² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (557790453811) 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 23 ways as a sum of consecutive naturals, for example, 24919110 + ... + 24941483.

It is an arithmetic number, because the mean of its divisors is an integer number (36946700154).

Almost surely, 2^557790453891 is an apocalyptic number.

557790453891 is a deficient number, since it is larger than the sum of its proper divisors (328930349805).

557790453891 is a wasteful number, since it uses less digits than its factorization.

557790453891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49860723 (or 49860720 counting only the distinct ones).

The product of its (nonzero) digits is 47628000, while the sum is 63.

The spelling of 557790453891 in words is "five hundred fifty-seven billion, seven hundred ninety million, four hundred fifty-three thousand, eight hundred ninety-one".