256631273022363 has 16 divisors (see below), whose sum is σ = 342834598858752. Its totient is φ = 170757781236000.

The previous prime is 256631273022329. The next prime is 256631273022407. The reversal of 256631273022363 is 363220372136652.

It is not a de Polignac number, because 256631273022363 - 2¹⁷ = 256631272891291 is a prime.

It is a super-2 number, since 2×256631273022363² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256631273022323) 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, 14325528 + ... + 26804538.

It is an arithmetic number, because the mean of its divisors is an integer number (21427162428672).

Almost surely, 2^{256631273022363} is an apocalyptic number.

256631273022363 is a deficient number, since it is larger than the sum of its proper divisors (86203325836389).

256631273022363 is a wasteful number, since it uses less digits than its factorization.

256631273022363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12492226.

The product of its (nonzero) digits is 9797760, while the sum is 51.

The spelling of 256631273022363 in words is "two hundred fifty-six trillion, six hundred thirty-one billion, two hundred seventy-three million, twenty-two thousand, three hundred sixty-three".