22138640833 has 2 divisors, whose sum is σ = 22138640834. Its totient is φ = 22138640832.

The previous prime is 22138640827. The next prime is 22138640851. The reversal of 22138640833 is 33804683122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11975581489 + 10163059344 = 109433^2 + 100812^2 .

It is a cyclic number.

It is not a de Polignac number, because 22138640833 - 2¹³ = 22138632641 is a prime.

It is not a weakly prime, because it can be changed into another prime (22138640863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11069320416 + 11069320417.

It is an arithmetic number, because the mean of its divisors is an integer number (11069320417).

Almost surely, 2^22138640833 is an apocalyptic number.

It is an amenable number.

22138640833 is a deficient number, since it is larger than the sum of its proper divisors (1).

22138640833 is an equidigital number, since it uses as much as digits as its factorization.

22138640833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 22138640833 in words is "twenty-two billion, one hundred thirty-eight million, six hundred forty thousand, eight hundred thirty-three".