56530981765 has 8 divisors (see below), whose sum is σ = 67883938848. Its totient is φ = 45193611600.

The previous prime is 56530981721. The next prime is 56530981777. The reversal of 56530981765 is 56718903565.

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

It is a de Polignac number, because none of the positive numbers 2^k-56530981765 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 3888747 + ... + 3903256.

It is an arithmetic number, because the mean of its divisors is an integer number (8485492356).

Almost surely, 2^56530981765 is an apocalyptic number.

It is an amenable number.

56530981765 is a deficient number, since it is larger than the sum of its proper divisors (11352957083).

56530981765 is a wasteful number, since it uses less digits than its factorization.

56530981765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7793459.

The product of its (nonzero) digits is 6804000, while the sum is 55.

The spelling of 56530981765 in words is "fifty-six billion, five hundred thirty million, nine hundred eighty-one thousand, seven hundred sixty-five".