56090781690 has 16 divisors (see below), whose sum is σ = 134617876128. Its totient is φ = 14957541776.

The previous prime is 56090781679. The next prime is 56090781713. The reversal of 56090781690 is 9618709065.

It is a super-2 number, since 2×56090781690² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 934846332 + ... + 934846391.

It is an arithmetic number, because the mean of its divisors is an integer number (8413617258).

Almost surely, 2^56090781690 is an apocalyptic number.

56090781690 is an abundant number, since it is smaller than the sum of its proper divisors (78527094438).

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

56090781690 is a wasteful number, since it uses less digits than its factorization.

56090781690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869692733.

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 56090781690 in words is "fifty-six billion, ninety million, seven hundred eighty-one thousand, six hundred ninety".