2008673963657 has 2 divisors, whose sum is σ = 2008673963658. Its totient is φ = 2008673963656.

The previous prime is 2008673963623. The next prime is 2008673963663. The reversal of 2008673963657 is 7563693768002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1658954304016 + 349719659641 = 1288004^2 + 591371^2 .

It is a cyclic number.

It is not a de Polignac number, because 2008673963657 - 2¹² = 2008673959561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2008673963657.

It is not a weakly prime, because it can be changed into another prime (2008673923657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004336981828 + 1004336981829.

It is an arithmetic number, because the mean of its divisors is an integer number (1004336981829).

Almost surely, 2^{2008673963657} is an apocalyptic number.

It is an amenable number.

2008673963657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2008673963657 is an equidigital number, since it uses as much as digits as its factorization.

2008673963657 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68584320, while the sum is 62.

The spelling of 2008673963657 in words is "two trillion, eight billion, six hundred seventy-three million, nine hundred sixty-three thousand, six hundred fifty-seven".