56439826290 has 48 divisors (see below), whose sum is σ = 146756180376. Its totient is φ = 15049324800.

The previous prime is 56439826259. The next prime is 56439826297. The reversal of 56439826290 is 9262893465.

It is a happy number.

56439826290 is a `hidden beast` number, since 5 + 6 + 4 + 3 + 9 + 8 + 2 + 629 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 55625694201 + 814132089 = 235851^2 + 28533^2 .

It is not an unprimeable number, because it can be changed into a prime (56439826297) 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 23 ways as a sum of consecutive naturals, for example, 1504360 + ... + 1541420.

Almost surely, 2^56439826290 is an apocalyptic number.

56439826290 is an abundant number, since it is smaller than the sum of its proper divisors (90316354086).

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

56439826290 is a wasteful number, since it uses less digits than its factorization.

56439826290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53995 (or 53992 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 56439826290 in words is "fifty-six billion, four hundred thirty-nine million, eight hundred twenty-six thousand, two hundred ninety".