656352261243 has 24 divisors (see below), whose sum is σ = 1131128615760. Its totient is φ = 375058434240.

The previous prime is 656352261181. The next prime is 656352261293. The reversal of 656352261243 is 342162253656.

656352261243 is a `hidden beast` number, since 6 + 5 + 6 + 3 + 5 + 22 + 612 + 4 + 3 = 666.

656352261243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 656352261243 - 2⁶ = 656352261179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656352261293) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248053198 + ... + 248055843.

It is an arithmetic number, because the mean of its divisors is an integer number (47130358990).

Almost surely, 2^656352261243 is an apocalyptic number.

656352261243 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

656352261243 is a deficient number, since it is larger than the sum of its proper divisors (474776354517).

656352261243 is a wasteful number, since it uses less digits than its factorization.

656352261243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496109064 (or 496109051 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 656352261243 in words is "six hundred fifty-six billion, three hundred fifty-two million, two hundred sixty-one thousand, two hundred forty-three".