656375463553 has 2 divisors, whose sum is σ = 656375463554. Its totient is φ = 656375463552.

The previous prime is 656375463539. The next prime is 656375463587. The reversal of 656375463553 is 355364573656.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 490850168449 + 165525295104 = 700607^2 + 406848^2 .

It is a cyclic number.

It is not a de Polignac number, because 656375463553 - 2⁵ = 656375463521 is a prime.

It is not a weakly prime, because it can be changed into another prime (656375463353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328187731776 + 328187731777.

It is an arithmetic number, because the mean of its divisors is an integer number (328187731777).

Almost surely, 2^656375463553 is an apocalyptic number.

It is an amenable number.

656375463553 is a deficient number, since it is larger than the sum of its proper divisors (1).

656375463553 is an equidigital number, since it uses as much as digits as its factorization.

656375463553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060000, while the sum is 58.

The spelling of 656375463553 in words is "six hundred fifty-six billion, three hundred seventy-five million, four hundred sixty-three thousand, five hundred fifty-three".