2557086499973 has 2 divisors, whose sum is σ = 2557086499974. Its totient is φ = 2557086499972.

The previous prime is 2557086499901. The next prime is 2557086500041. The reversal of 2557086499973 is 3799946807552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2245328427364 + 311758072609 = 1498442^2 + 558353^2 .

It is a cyclic number.

It is not a de Polignac number, because 2557086499973 - 2²² = 2557082305669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2557086499973.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557086496973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278543249986 + 1278543249987.

It is an arithmetic number, because the mean of its divisors is an integer number (1278543249987).

Almost surely, 2^{2557086499973} is an apocalyptic number.

It is an amenable number.

2557086499973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557086499973 is an equidigital number, since it uses as much as digits as its factorization.

2557086499973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1028764800, while the sum is 74.

The spelling of 2557086499973 in words is "two trillion, five hundred fifty-seven billion, eighty-six million, four hundred ninety-nine thousand, nine hundred seventy-three".