3556626256493 has 2 divisors, whose sum is σ = 3556626256494. Its totient is φ = 3556626256492.

The previous prime is 3556626256453. The next prime is 3556626256517. The reversal of 3556626256493 is 3946526266553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2680152071689 + 876474184804 = 1637117^2 + 936202^2 .

It is a cyclic number.

It is not a de Polignac number, because 3556626256493 - 2⁶ = 3556626256429 is a prime.

It is a super-2 number, since 2×3556626256493² (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 (3556626256423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1778313128246 + 1778313128247.

It is an arithmetic number, because the mean of its divisors is an integer number (1778313128247).

Almost surely, 2^{3556626256493} is an apocalyptic number.

It is an amenable number.

3556626256493 is a deficient number, since it is larger than the sum of its proper divisors (1).

3556626256493 is an equidigital number, since it uses as much as digits as its factorization.

3556626256493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952000, while the sum is 62.

The spelling of 3556626256493 in words is "three trillion, five hundred fifty-six billion, six hundred twenty-six million, two hundred fifty-six thousand, four hundred ninety-three".