557261327640 has 64 divisors (see below), whose sum is σ = 1759772620800. Its totient is φ = 140781808512.

The previous prime is 557261327611. The next prime is 557261327657. The reversal of 557261327640 is 46723162755.

It is a self number, because there is not a number n which added to its sum of digits gives 557261327640.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 122204152 + ... + 122208711.

It is an arithmetic number, because the mean of its divisors is an integer number (27496447200).

Almost surely, 2^557261327640 is an apocalyptic number.

It is an amenable number.

557261327640 is an abundant number, since it is smaller than the sum of its proper divisors (1202511293160).

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

557261327640 is a wasteful number, since it uses less digits than its factorization.

557261327640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244412896 (or 244412892 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 48.

The spelling of 557261327640 in words is "five hundred fifty-seven billion, two hundred sixty-one million, three hundred twenty-seven thousand, six hundred forty".