2521320758263 has 2 divisors, whose sum is σ = 2521320758264. Its totient is φ = 2521320758262.

The previous prime is 2521320758251. The next prime is 2521320758329. The reversal of 2521320758263 is 3628570231252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2521320758263 - 2⁹ = 2521320757751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2521320158263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1260660379131 + 1260660379132.

It is an arithmetic number, because the mean of its divisors is an integer number (1260660379132).

Almost surely, 2^{2521320758263} is an apocalyptic number.

2521320758263 is a deficient number, since it is larger than the sum of its proper divisors (1).

2521320758263 is an equidigital number, since it uses as much as digits as its factorization.

2521320758263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 2521320758263 in words is "two trillion, five hundred twenty-one billion, three hundred twenty million, seven hundred fifty-eight thousand, two hundred sixty-three".