21833406593 has 2 divisors, whose sum is σ = 21833406594. Its totient is φ = 21833406592.

The previous prime is 21833406577. The next prime is 21833406613. The reversal of 21833406593 is 39560433812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21807314929 + 26091664 = 147673^2 + 5108^2 .

It is a cyclic number.

It is not a de Polignac number, because 21833406593 - 2⁴ = 21833406577 is a prime.

It is not a weakly prime, because it can be changed into another prime (21833406503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10916703296 + 10916703297.

It is an arithmetic number, because the mean of its divisors is an integer number (10916703297).

Almost surely, 2^21833406593 is an apocalyptic number.

It is an amenable number.

21833406593 is a deficient number, since it is larger than the sum of its proper divisors (1).

21833406593 is an equidigital number, since it uses as much as digits as its factorization.

21833406593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 21833406593 in words is "twenty-one billion, eight hundred thirty-three million, four hundred six thousand, five hundred ninety-three".