2523436343221 has 2 divisors, whose sum is σ = 2523436343222. Its totient is φ = 2523436343220.

The previous prime is 2523436343209. The next prime is 2523436343257. The reversal of 2523436343221 is 1223436343252.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2419984696900 + 103451646321 = 1555630^2 + 321639^2 .

It is a cyclic number.

It is not a de Polignac number, because 2523436343221 - 2⁵ = 2523436343189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2523436743221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1261718171610 + 1261718171611.

It is an arithmetic number, because the mean of its divisors is an integer number (1261718171611).

Almost surely, 2^{2523436343221} is an apocalyptic number.

It is an amenable number.

2523436343221 is a deficient number, since it is larger than the sum of its proper divisors (1).

2523436343221 is an equidigital number, since it uses as much as digits as its factorization.

2523436343221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 40.

The spelling of 2523436343221 in words is "two trillion, five hundred twenty-three billion, four hundred thirty-six million, three hundred forty-three thousand, two hundred twenty-one".