21404114059 has 2 divisors, whose sum is σ = 21404114060. Its totient is φ = 21404114058.

The previous prime is 21404114057. The next prime is 21404114117. The reversal of 21404114059 is 95041140412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21404114059 - 2¹ = 21404114057 is a prime.

Together with 21404114057, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21404114059.

It is not a weakly prime, because it can be changed into another prime (21404114051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10702057029 + 10702057030.

It is an arithmetic number, because the mean of its divisors is an integer number (10702057030).

Almost surely, 2^21404114059 is an apocalyptic number.

21404114059 is a deficient number, since it is larger than the sum of its proper divisors (1).

21404114059 is an equidigital number, since it uses as much as digits as its factorization.

21404114059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 31.

The spelling of 21404114059 in words is "twenty-one billion, four hundred four million, one hundred fourteen thousand, fifty-nine".