2555493362621 has 2 divisors, whose sum is σ = 2555493362622. Its totient is φ = 2555493362620.

The previous prime is 2555493362599. The next prime is 2555493362717. The reversal of 2555493362621 is 1262633945552.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2003725180900 + 551768181721 = 1415530^2 + 742811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2555493362621 - 2²² = 2555489168317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2555493662621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1277746681310 + 1277746681311.

It is an arithmetic number, because the mean of its divisors is an integer number (1277746681311).

Almost surely, 2^{2555493362621} is an apocalyptic number.

It is an amenable number.

2555493362621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2555493362621 is an equidigital number, since it uses as much as digits as its factorization.

2555493362621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664000, while the sum is 53.

The spelling of 2555493362621 in words is "two trillion, five hundred fifty-five billion, four hundred ninety-three million, three hundred sixty-two thousand, six hundred twenty-one".