200656428623 has 16 divisors (see below), whose sum is σ = 232989085440. Its totient is φ = 169246034496.

The previous prime is 200656428617. The next prime is 200656428689. The reversal of 200656428623 is 326824656002.

It is not a de Polignac number, because 200656428623 - 2²⁸ = 200387993167 is a prime.

It is a super-2 number, since 2×200656428623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200656458623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222488 + ... + 671426.

It is an arithmetic number, because the mean of its divisors is an integer number (14561817840).

Almost surely, 2^200656428623 is an apocalyptic number.

200656428623 is a deficient number, since it is larger than the sum of its proper divisors (32332656817).

200656428623 is an equidigital number, since it uses as much as digits as its factorization.

200656428623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449966.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 200656428623 in words is "two hundred billion, six hundred fifty-six million, four hundred twenty-eight thousand, six hundred twenty-three".