4256734440263 has 2 divisors, whose sum is σ = 4256734440264. Its totient is φ = 4256734440262.

The previous prime is 4256734440241. The next prime is 4256734440311. The reversal of 4256734440263 is 3620444376524.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4256734440263 - 2¹² = 4256734436167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4256734440463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2128367220131 + 2128367220132.

It is an arithmetic number, because the mean of its divisors is an integer number (2128367220132).

Almost surely, 2^{4256734440263} is an apocalyptic number.

4256734440263 is a deficient number, since it is larger than the sum of its proper divisors (1).

4256734440263 is an equidigital number, since it uses as much as digits as its factorization.

4256734440263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11612160, while the sum is 50.

The spelling of 4256734440263 in words is "four trillion, two hundred fifty-six billion, seven hundred thirty-four million, four hundred forty thousand, two hundred sixty-three".