656375464553 has 4 divisors (see below), whose sum is σ = 656377437828. Its totient is φ = 656373491280.

The previous prime is 656375464529. The next prime is 656375464601. The reversal of 656375464553 is 355464573656.

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

It can be written as a sum of positive squares in 2 ways, for example, as 282893143129 + 373482321424 = 531877^2 + 611132^2 .

It is a cyclic number.

It is not a de Polignac number, because 656375464553 - 2¹² = 656375460457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 656375464492 and 656375464501.

It is not an unprimeable number, because it can be changed into a prime (656375463553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351326 + ... + 1198407.

It is an arithmetic number, because the mean of its divisors is an integer number (164094359457).

Almost surely, 2^656375464553 is an apocalyptic number.

It is an amenable number.

656375464553 is a deficient number, since it is larger than the sum of its proper divisors (1973275).

656375464553 is a wasteful number, since it uses less digits than its factorization.

656375464553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973274.

The product of its digits is 136080000, while the sum is 59.

The spelling of 656375464553 in words is "six hundred fifty-six billion, three hundred seventy-five million, four hundred sixty-four thousand, five hundred fifty-three".