656305048340 has 12 divisors (see below), whose sum is σ = 1378240601556. Its totient is φ = 262522019328.

The previous prime is 656305048339. The next prime is 656305048391. The reversal of 656305048340 is 43840503656.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 82813875076 + 573491173264 = 287774^2 + 757292^2 .

It is a junction number, because it is equal to n+sod(n) for n = 656305048291 and 656305048300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16407626189 + ... + 16407626228.

It is an arithmetic number, because the mean of its divisors is an integer number (114853383463).

Almost surely, 2^656305048340 is an apocalyptic number.

It is an amenable number.

656305048340 is an abundant number, since it is smaller than the sum of its proper divisors (721935553216).

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

656305048340 is a wasteful number, since it uses less digits than its factorization.

656305048340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32815252426 (or 32815252424 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 656305048340 in words is "six hundred fifty-six billion, three hundred five million, forty-eight thousand, three hundred forty".