2255741745621 has 32 divisors (see below), whose sum is σ = 3777275577600. Its totient is φ = 1189841792832.

The previous prime is 2255741745613. The next prime is 2255741745641. The reversal of 2255741745621 is 1265471475522.

It is not a de Polignac number, because 2255741745621 - 2³ = 2255741745613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2255741745641) 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 in 31 ways as a sum of consecutive naturals, for example, 84300810 + ... + 84327563.

It is an arithmetic number, because the mean of its divisors is an integer number (118039861800).

Almost surely, 2^{2255741745621} is an apocalyptic number.

2255741745621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2255741745621 is a deficient number, since it is larger than the sum of its proper divisors (1521533831979).

2255741745621 is a wasteful number, since it uses less digits than its factorization.

2255741745621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168628410 (or 168628396 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 51.

The spelling of 2255741745621 in words is "two trillion, two hundred fifty-five billion, seven hundred forty-one million, seven hundred forty-five thousand, six hundred twenty-one".