2620404544453 has 2 divisors, whose sum is σ = 2620404544454. Its totient is φ = 2620404544452.

The previous prime is 2620404544403. The next prime is 2620404544519. The reversal of 2620404544453 is 3544454040262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2587651869924 + 32752674529 = 1608618^2 + 180977^2 .

It is a cyclic number.

It is not a de Polignac number, because 2620404544453 - 2²⁵ = 2620370990021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2620404544403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310202272226 + 1310202272227.

It is an arithmetic number, because the mean of its divisors is an integer number (1310202272227).

Almost surely, 2^{2620404544453} is an apocalyptic number.

It is an amenable number.

2620404544453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2620404544453 is an equidigital number, since it uses as much as digits as its factorization.

2620404544453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1843200, while the sum is 43.

The spelling of 2620404544453 in words is "two trillion, six hundred twenty billion, four hundred four million, five hundred forty-four thousand, four hundred fifty-three".