263230402493 has 2 divisors, whose sum is σ = 263230402494. Its totient is φ = 263230402492.

The previous prime is 263230402411. The next prime is 263230402529. The reversal of 263230402493 is 394204032362.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154305981124 + 108924421369 = 392818^2 + 330037^2 .

It is a cyclic number.

It is not a de Polignac number, because 263230402493 - 2²⁶ = 263163293629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263230602493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131615201246 + 131615201247.

It is an arithmetic number, because the mean of its divisors is an integer number (131615201247).

Almost surely, 2^263230402493 is an apocalyptic number.

It is an amenable number.

263230402493 is a deficient number, since it is larger than the sum of its proper divisors (1).

263230402493 is an equidigital number, since it uses as much as digits as its factorization.

263230402493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 38.

The spelling of 263230402493 in words is "two hundred sixty-three billion, two hundred thirty million, four hundred two thousand, four hundred ninety-three".