56906586490 has 32 divisors (see below), whose sum is σ = 110354040720. Its totient is φ = 21003508224.

The previous prime is 56906586469. The next prime is 56906586491. The reversal of 56906586490 is 9468560965.

It can be written as a sum of positive squares in 8 ways, for example, as 33921904041 + 22984682449 = 184179^2 + 151607^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (56906586491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256576 + ... + 423844.

Almost surely, 2^56906586490 is an apocalyptic number.

56906586490 is a deficient number, since it is larger than the sum of its proper divisors (53447454230).

56906586490 is a wasteful number, since it uses less digits than its factorization.

56906586490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169906.

The product of its (nonzero) digits is 13996800, while the sum is 58.

The spelling of 56906586490 in words is "fifty-six billion, nine hundred six million, five hundred eighty-six thousand, four hundred ninety".