2622166345657 has 2 divisors, whose sum is σ = 2622166345658. Its totient is φ = 2622166345656.

The previous prime is 2622166345651. The next prime is 2622166345691. The reversal of 2622166345657 is 7565436612262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2595002031801 + 27164313856 = 1610901^2 + 164816^2 .

It is a cyclic number.

It is not a de Polignac number, because 2622166345657 - 2¹¹ = 2622166343609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2622166345598 and 2622166345607.

It is not a weakly prime, because it can be changed into another prime (2622166345651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1311083172828 + 1311083172829.

It is an arithmetic number, because the mean of its divisors is an integer number (1311083172829).

Almost surely, 2^{2622166345657} is an apocalyptic number.

It is an amenable number.

2622166345657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2622166345657 is an equidigital number, since it uses as much as digits as its factorization.

2622166345657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21772800, while the sum is 55.

The spelling of 2622166345657 in words is "two trillion, six hundred twenty-two billion, one hundred sixty-six million, three hundred forty-five thousand, six hundred fifty-seven".