656473557324271 has 4 divisors (see below), whose sum is σ = 656473716931600. Its totient is φ = 656473397716944.

The previous prime is 656473557324227. The next prime is 656473557324307. The reversal of 656473557324271 is 172423755374656.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 656473557324271 - 2¹⁷ = 656473557193199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 656473557324197 and 656473557324206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656473557324371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73466331 + ... + 81916108.

It is an arithmetic number, because the mean of its divisors is an integer number (164118429232900).

Almost surely, 2^{656473557324271} is an apocalyptic number.

656473557324271 is a deficient number, since it is larger than the sum of its proper divisors (159607329).

656473557324271 is a wasteful number, since it uses less digits than its factorization.

656473557324271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159607328.

The product of its digits is 889056000, while the sum is 67.

The spelling of 656473557324271 in words is "six hundred fifty-six trillion, four hundred seventy-three billion, five hundred fifty-seven million, three hundred twenty-four thousand, two hundred seventy-one".