556551605457 has 12 divisors (see below), whose sum is σ = 803971835524. Its totient is φ = 371004883200.

The previous prime is 556551605443. The next prime is 556551605473. The reversal of 556551605457 is 754506155655.

It can be written as a sum of positive squares in 2 ways, for example, as 213230609361 + 343320996096 = 461769^2 + 585936^2 .

It is a de Polignac number, because none of the positive numbers 2^k-556551605457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (556551605557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2340328 + ... + 2567145.

Almost surely, 2^556551605457 is an apocalyptic number.

It is an amenable number.

556551605457 is a deficient number, since it is larger than the sum of its proper divisors (247420230067).

556551605457 is a wasteful number, since it uses less digits than its factorization.

556551605457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4920080 (or 4920077 counting only the distinct ones).

The product of its (nonzero) digits is 15750000, while the sum is 54.

The spelling of 556551605457 in words is "five hundred fifty-six billion, five hundred fifty-one million, six hundred five thousand, four hundred fifty-seven".