56263581909 has 16 divisors (see below), whose sum is σ = 83400432640. Its totient is φ = 37487914560.

The previous prime is 56263581883. The next prime is 56263581943. The reversal of 56263581909 is 90918536265.

It is a happy number.

56263581909 is a `hidden beast` number, since 5 + 626 + 3 + 5 + 8 + 1 + 9 + 0 + 9 = 666.

It is not a de Polignac number, because 56263581909 - 2⁸ = 56263581653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56263581809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 538357 + ... + 634314.

It is an arithmetic number, because the mean of its divisors is an integer number (5212527040).

Almost surely, 2^56263581909 is an apocalyptic number.

It is an amenable number.

56263581909 is a deficient number, since it is larger than the sum of its proper divisors (27136850731).

56263581909 is a wasteful number, since it uses less digits than its factorization.

56263581909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174457 (or 1174451 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 56263581909 in words is "fifty-six billion, two hundred sixty-three million, five hundred eighty-one thousand, nine hundred nine".