21401596959583 has 2 divisors, whose sum is σ = 21401596959584. Its totient is φ = 21401596959582.

The previous prime is 21401596959571. The next prime is 21401596959599. The reversal of 21401596959583 is 38595969510412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21401596959583 - 2⁵ = 21401596959551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21401596959683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10700798479791 + 10700798479792.

It is an arithmetic number, because the mean of its divisors is an integer number (10700798479792).

Almost surely, 2^{21401596959583} is an apocalyptic number.

21401596959583 is a deficient number, since it is larger than the sum of its proper divisors (1).

21401596959583 is an equidigital number, since it uses as much as digits as its factorization.

21401596959583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976000, while the sum is 67.

The spelling of 21401596959583 in words is "twenty-one trillion, four hundred one billion, five hundred ninety-six million, nine hundred fifty-nine thousand, five hundred eighty-three".