255616502513 has 2 divisors, whose sum is σ = 255616502514. Its totient is φ = 255616502512.

The previous prime is 255616502461. The next prime is 255616502539. The reversal of 255616502513 is 315205616552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 254653455424 + 963047089 = 504632^2 + 31033^2 .

It is a cyclic number.

It is not a de Polignac number, because 255616502513 - 2⁸ = 255616502257 is a prime.

It is not a weakly prime, because it can be changed into another prime (255616502543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127808251256 + 127808251257.

It is an arithmetic number, because the mean of its divisors is an integer number (127808251257).

Almost surely, 2^255616502513 is an apocalyptic number.

It is an amenable number.

255616502513 is a deficient number, since it is larger than the sum of its proper divisors (1).

255616502513 is an equidigital number, since it uses as much as digits as its factorization.

255616502513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270000, while the sum is 41.

The spelling of 255616502513 in words is "two hundred fifty-five billion, six hundred sixteen million, five hundred two thousand, five hundred thirteen".