2606548557493 has 2 divisors, whose sum is σ = 2606548557494. Its totient is φ = 2606548557492.

The previous prime is 2606548557467. The next prime is 2606548557497. The reversal of 2606548557493 is 3947558456062.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2132601677649 + 473946879844 = 1460343^2 + 688438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2606548557493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2606548557497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1303274278746 + 1303274278747.

It is an arithmetic number, because the mean of its divisors is an integer number (1303274278747).

Almost surely, 2^{2606548557493} is an apocalyptic number.

It is an amenable number.

2606548557493 is a deficient number, since it is larger than the sum of its proper divisors (1).

2606548557493 is an equidigital number, since it uses as much as digits as its factorization.

2606548557493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728000, while the sum is 64.

The spelling of 2606548557493 in words is "two trillion, six hundred six billion, five hundred forty-eight million, five hundred fifty-seven thousand, four hundred ninety-three".