2557320310969 has 2 divisors, whose sum is σ = 2557320310970. Its totient is φ = 2557320310968.

The previous prime is 2557320310933. The next prime is 2557320310991. The reversal of 2557320310969 is 9690130237552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2451692060944 + 105628250025 = 1565788^2 + 325005^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557320310969 - 2¹³ = 2557320302777 is a prime.

It is a super-2 number, since 2×2557320310969² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2557320310169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278660155484 + 1278660155485.

It is an arithmetic number, because the mean of its divisors is an integer number (1278660155485).

Almost surely, 2^{2557320310969} is an apocalyptic number.

It is an amenable number.

2557320310969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557320310969 is an equidigital number, since it uses as much as digits as its factorization.

2557320310969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3061800, while the sum is 52.

The spelling of 2557320310969 in words is "two trillion, five hundred fifty-seven billion, three hundred twenty million, three hundred ten thousand, nine hundred sixty-nine".