2495668072657 has 2 divisors, whose sum is σ = 2495668072658. Its totient is φ = 2495668072656.

The previous prime is 2495668072649. The next prime is 2495668072691. The reversal of 2495668072657 is 7562708665942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2477252497041 + 18415575616 = 1573929^2 + 135704^2 .

It is a cyclic number.

It is not a de Polignac number, because 2495668072657 - 2³ = 2495668072649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2495668072592 and 2495668072601.

It is not a weakly prime, because it can be changed into another prime (2495668072637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1247834036328 + 1247834036329.

It is an arithmetic number, because the mean of its divisors is an integer number (1247834036329).

Almost surely, 2^{2495668072657} is an apocalyptic number.

It is an amenable number.

2495668072657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2495668072657 is an equidigital number, since it uses as much as digits as its factorization.

2495668072657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 304819200, while the sum is 67.

The spelling of 2495668072657 in words is "two trillion, four hundred ninety-five billion, six hundred sixty-eight million, seventy-two thousand, six hundred fifty-seven".