21424210460039 has 2 divisors, whose sum is σ = 21424210460040. Its totient is φ = 21424210460038.

The previous prime is 21424210460011. The next prime is 21424210460071. The reversal of 21424210460039 is 93006401242412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21424210460039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21424210459984 and 21424210460011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21424210460339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10712105230019 + 10712105230020.

It is an arithmetic number, because the mean of its divisors is an integer number (10712105230020).

Almost surely, 2^{21424210460039} is an apocalyptic number.

21424210460039 is a deficient number, since it is larger than the sum of its proper divisors (1).

21424210460039 is an equidigital number, since it uses as much as digits as its factorization.

21424210460039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 38.

The spelling of 21424210460039 in words is "twenty-one trillion, four hundred twenty-four billion, two hundred ten million, four hundred sixty thousand, thirty-nine".