2646006630557 has 2 divisors, whose sum is σ = 2646006630558. Its totient is φ = 2646006630556.

The previous prime is 2646006630541. The next prime is 2646006630577. The reversal of 2646006630557 is 7550366006462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2241401231161 + 404605399396 = 1497131^2 + 636086^2 .

It is a cyclic number.

It is not a de Polignac number, because 2646006630557 - 2⁴ = 2646006630541 is a prime.

It is a super-2 number, since 2×2646006630557² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2646006630577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1323003315278 + 1323003315279.

It is an arithmetic number, because the mean of its divisors is an integer number (1323003315279).

Almost surely, 2^{2646006630557} is an apocalyptic number.

It is an amenable number.

2646006630557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2646006630557 is an equidigital number, since it uses as much as digits as its factorization.

2646006630557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5443200, while the sum is 50.

The spelling of 2646006630557 in words is "two trillion, six hundred forty-six billion, six million, six hundred thirty thousand, five hundred fifty-seven".