2557161679 has 2 divisors, whose sum is σ = 2557161680. Its totient is φ = 2557161678.

The previous prime is 2557161653. The next prime is 2557161703. The reversal of 2557161679 is 9761617552.

2557161679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2557161679 - 2¹⁷ = 2557030607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2557161179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1278580839 + 1278580840.

It is an arithmetic number, because the mean of its divisors is an integer number (1278580840).

Almost surely, 2^2557161679 is an apocalyptic number.

2557161679 is a deficient number, since it is larger than the sum of its proper divisors (1).

2557161679 is an equidigital number, since it uses as much as digits as its factorization.

2557161679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 793800, while the sum is 49.

The square root of 2557161679 is about 50568.3861617117. The cubic root of 2557161679 is about 1367.4750015650.

The spelling of 2557161679 in words is "two billion, five hundred fifty-seven million, one hundred sixty-one thousand, six hundred seventy-nine".