56398489365 has 32 divisors (see below), whose sum is σ = 90771549696. Its totient is φ = 29901608000.

The previous prime is 56398489363. The next prime is 56398489403.

It is a happy number.

56398489365 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56398489365 - 2¹ = 56398489363 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56398489296 and 56398489305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56398489361) 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 31 ways as a sum of consecutive naturals, for example, 2313490 + ... + 2337740.

It is an arithmetic number, because the mean of its divisors is an integer number (2836610928).

Almost surely, 2^56398489365 is an apocalyptic number.

It is an amenable number.

56398489365 is a deficient number, since it is larger than the sum of its proper divisors (34373060331).

56398489365 is a wasteful number, since it uses less digits than its factorization.

56398489365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25169.

The product of its digits is 167961600, while the sum is 66.

The spelling of 56398489365 in words is "fifty-six billion, three hundred ninety-eight million, four hundred eighty-nine thousand, three hundred sixty-five".