856373502263 has 2 divisors, whose sum is σ = 856373502264. Its totient is φ = 856373502262.

The previous prime is 856373502161. The next prime is 856373502331. The reversal of 856373502263 is 362205373658.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 856373502263 - 2¹⁴ = 856373485879 is a prime.

It is a super-2 number, since 2×856373502263² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856373502763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428186751131 + 428186751132.

It is an arithmetic number, because the mean of its divisors is an integer number (428186751132).

Almost surely, 2^856373502263 is an apocalyptic number.

856373502263 is a deficient number, since it is larger than the sum of its proper divisors (1).

856373502263 is an equidigital number, since it uses as much as digits as its factorization.

856373502263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 856373502263 in words is "eight hundred fifty-six billion, three hundred seventy-three million, five hundred two thousand, two hundred sixty-three".