21440433199139 has 2 divisors, whose sum is σ = 21440433199140. Its totient is φ = 21440433199138.

The previous prime is 21440433199117. The next prime is 21440433199151. The reversal of 21440433199139 is 93199133404412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21440433199139 - 2²⁴ = 21440416421923 is a prime.

It is not a weakly prime, because it can be changed into another prime (21440433169139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10720216599569 + 10720216599570.

It is an arithmetic number, because the mean of its divisors is an integer number (10720216599570).

Almost surely, 2^{21440433199139} is an apocalyptic number.

21440433199139 is a deficient number, since it is larger than the sum of its proper divisors (1).

21440433199139 is an equidigital number, since it uses as much as digits as its factorization.

21440433199139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 53.

The spelling of 21440433199139 in words is "twenty-one trillion, four hundred forty billion, four hundred thirty-three million, one hundred ninety-nine thousand, one hundred thirty-nine".