4354342523021 has 2 divisors, whose sum is σ = 4354342523022. Its totient is φ = 4354342523020.

The previous prime is 4354342523009. The next prime is 4354342523029. The reversal of 4354342523021 is 1203252434534.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3727656549796 + 626685973225 = 1930714^2 + 791635^2 .

It is a cyclic number.

It is not a de Polignac number, because 4354342523021 - 2²⁶ = 4354275414157 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4354342523029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2177171261510 + 2177171261511.

It is an arithmetic number, because the mean of its divisors is an integer number (2177171261511).

Almost surely, 2^{4354342523021} is an apocalyptic number.

It is an amenable number.

4354342523021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4354342523021 is an equidigital number, since it uses as much as digits as its factorization.

4354342523021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 4354342523021 its reverse (1203252434534), we get a palindrome (5557594957555).

The spelling of 4354342523021 in words is "four trillion, three hundred fifty-four billion, three hundred forty-two million, five hundred twenty-three thousand, twenty-one".