56445595309 has 8 divisors (see below), whose sum is σ = 58549496192. Its totient is φ = 54377658720.

The previous prime is 56445595303. The next prime is 56445595343. The reversal of 56445595309 is 90359554465.

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

It is a cyclic number.

It is not a de Polignac number, because 56445595309 - 2⁵ = 56445595277 is a prime.

It is a super-2 number, since 2×56445595309² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56445595309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56445595303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8987877 + ... + 8994154.

It is an arithmetic number, because the mean of its divisors is an integer number (7318687024).

Almost surely, 2^56445595309 is an apocalyptic number.

It is an amenable number.

56445595309 is a deficient number, since it is larger than the sum of its proper divisors (2103900883).

56445595309 is a wasteful number, since it uses less digits than its factorization.

56445595309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17982147.

The product of its (nonzero) digits is 14580000, while the sum is 55.

The spelling of 56445595309 in words is "fifty-six billion, four hundred forty-five million, five hundred ninety-five thousand, three hundred nine".