2604645064457 has 2 divisors, whose sum is σ = 2604645064458. Its totient is φ = 2604645064456.

The previous prime is 2604645064451. The next prime is 2604645064481. The reversal of 2604645064457 is 7544605464062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2601959337481 + 2685726976 = 1613059^2 + 51824^2 .

It is a cyclic number.

It is not a de Polignac number, because 2604645064457 - 2²⁶ = 2604577955593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2604645064399 and 2604645064408.

It is not a weakly prime, because it can be changed into another prime (2604645064451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302322532228 + 1302322532229.

It is an arithmetic number, because the mean of its divisors is an integer number (1302322532229).

Almost surely, 2^{2604645064457} is an apocalyptic number.

It is an amenable number.

2604645064457 is a deficient number, since it is larger than the sum of its proper divisors (1).

2604645064457 is an equidigital number, since it uses as much as digits as its factorization.

2604645064457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19353600, while the sum is 53.

The spelling of 2604645064457 in words is "two trillion, six hundred four billion, six hundred forty-five million, sixty-four thousand, four hundred fifty-seven".