2293443705821 has 2 divisors, whose sum is σ = 2293443705822. Its totient is φ = 2293443705820.

The previous prime is 2293443705733. The next prime is 2293443705823. The reversal of 2293443705821 is 1285073443922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1602781320100 + 690662385721 = 1266010^2 + 831061^2 .

It is a cyclic number.

It is not a de Polignac number, because 2293443705821 - 2²⁶ = 2293376596957 is a prime.

Together with 2293443705823, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2293443705821.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2293443705823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1146721852910 + 1146721852911.

It is an arithmetic number, because the mean of its divisors is an integer number (1146721852911).

Almost surely, 2^{2293443705821} is an apocalyptic number.

It is an amenable number.

2293443705821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2293443705821 is an equidigital number, since it uses as much as digits as its factorization.

2293443705821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 2293443705821 in words is "two trillion, two hundred ninety-three billion, four hundred forty-three million, seven hundred five thousand, eight hundred twenty-one".