21034342407053 has 2 divisors, whose sum is σ = 21034342407054. Its totient is φ = 21034342407052.

The previous prime is 21034342407041. The next prime is 21034342407103. The reversal of 21034342407053 is 35070424343012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17826525289609 + 3207817117444 = 4222147^2 + 1791038^2 .

It is a cyclic number.

It is not a de Polignac number, because 21034342407053 - 2²⁰ = 21034341358477 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21034342406998 and 21034342407016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21034342497053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10517171203526 + 10517171203527.

It is an arithmetic number, because the mean of its divisors is an integer number (10517171203527).

Almost surely, 2^{21034342407053} is an apocalyptic number.

It is an amenable number.

21034342407053 is a deficient number, since it is larger than the sum of its proper divisors (1).

21034342407053 is an equidigital number, since it uses as much as digits as its factorization.

21034342407053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 38.

The spelling of 21034342407053 in words is "twenty-one trillion, thirty-four billion, three hundred forty-two million, four hundred seven thousand, fifty-three".