56485644658391 has 16 divisors (see below), whose sum is σ = 62208846534240. Its totient is φ = 50966636073600.

The previous prime is 56485644658361. The next prime is 56485644658463. The reversal of 56485644658391 is 19385644658465.

It is not a de Polignac number, because 56485644658391 - 2⁴² = 52087598147287 is a prime.

It is a super-2 number, since 2×56485644658391² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56485644658361) 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, 152197685 + ... + 152568366.

It is an arithmetic number, because the mean of its divisors is an integer number (3888052908390).

Almost surely, 2^{56485644658391} is an apocalyptic number.

56485644658391 is a deficient number, since it is larger than the sum of its proper divisors (5723201875849).

56485644658391 is a wasteful number, since it uses less digits than its factorization.

56485644658391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304766386.

The product of its digits is 2985984000, while the sum is 74.

Adding to 56485644658391 its sum of digits (74), we get a palindrome (56485644658465).

The spelling of 56485644658391 in words is "fifty-six trillion, four hundred eighty-five billion, six hundred forty-four million, six hundred fifty-eight thousand, three hundred ninety-one".