2650849620257 has 2 divisors, whose sum is σ = 2650849620258. Its totient is φ = 2650849620256.

The previous prime is 2650849620169. The next prime is 2650849620259. The reversal of 2650849620257 is 7520269480562.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2229753751696 + 421095868561 = 1493236^2 + 648919^2 .

It is a cyclic number.

It is not a de Polignac number, because 2650849620257 - 2²² = 2650845425953 is a prime.

It is a super-2 number, since 2×2650849620257² (a number of 26 digits) contains 22 as substring.

Together with 2650849620259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2650849620259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325424810128 + 1325424810129.

It is an arithmetic number, because the mean of its divisors is an integer number (1325424810129).

Almost surely, 2^{2650849620257} is an apocalyptic number.

It is an amenable number.

2650849620257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2650849620257 is an equidigital number, since it uses as much as digits as its factorization.

2650849620257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14515200, while the sum is 56.

The spelling of 2650849620257 in words is "two trillion, six hundred fifty billion, eight hundred forty-nine million, six hundred twenty thousand, two hundred fifty-seven".