21416604611443 has 2 divisors, whose sum is σ = 21416604611444. Its totient is φ = 21416604611442.

The previous prime is 21416604611417. The next prime is 21416604611447. The reversal of 21416604611443 is 34411640661412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21416604611443 - 2⁴¹ = 19217581355891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21416604611443.

It is not a weakly prime, because it can be changed into another prime (21416604611447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10708302305721 + 10708302305722.

It is an arithmetic number, because the mean of its divisors is an integer number (10708302305722).

Almost surely, 2^{21416604611443} is an apocalyptic number.

21416604611443 is a deficient number, since it is larger than the sum of its proper divisors (1).

21416604611443 is an equidigital number, since it uses as much as digits as its factorization.

21416604611443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 43.

The spelling of 21416604611443 in words is "twenty-one trillion, four hundred sixteen billion, six hundred four million, six hundred eleven thousand, four hundred forty-three".