2644523225447 has 2 divisors, whose sum is σ = 2644523225448. Its totient is φ = 2644523225446.

The previous prime is 2644523225339. The next prime is 2644523225453. The reversal of 2644523225447 is 7445223254462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2644523225447 - 2²⁴ = 2644506448231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2644523225395 and 2644523225404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2644523225467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322261612723 + 1322261612724.

It is an arithmetic number, because the mean of its divisors is an integer number (1322261612724).

Almost surely, 2^{2644523225447} is an apocalyptic number.

2644523225447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2644523225447 is an equidigital number, since it uses as much as digits as its factorization.

2644523225447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12902400, while the sum is 50.

The spelling of 2644523225447 in words is "two trillion, six hundred forty-four billion, five hundred twenty-three million, two hundred twenty-five thousand, four hundred forty-seven".