56257343578 has 8 divisors (see below), whose sum is σ = 84388108500. Its totient is φ = 28127974080.

The previous prime is 56257343533. The next prime is 56257343617. The reversal of 56257343578 is 87534375265.

It can be written as a sum of positive squares in 2 ways, for example, as 56009375569 + 247968009 = 236663^2 + 15747^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 241453 + ... + 413296.

Almost surely, 2^56257343578 is an apocalyptic number.

56257343578 is a deficient number, since it is larger than the sum of its proper divisors (28130764922).

56257343578 is a wasteful number, since it uses less digits than its factorization.

56257343578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697712.

The product of its digits is 21168000, while the sum is 55.

The spelling of 56257343578 in words is "fifty-six billion, two hundred fifty-seven million, three hundred forty-three thousand, five hundred seventy-eight".