33223420493 has 2 divisors, whose sum is σ = 33223420494. Its totient is φ = 33223420492.

The previous prime is 33223420421. The next prime is 33223420561. The reversal of 33223420493 is 39402432233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21768641764 + 11454778729 = 147542^2 + 107027^2 .

It is an emirp because it is prime and its reverse (39402432233) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33223420493 is a prime.

It is a super-2 number, since 2×33223420493² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33223920493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16611710246 + 16611710247.

It is an arithmetic number, because the mean of its divisors is an integer number (16611710247).

Almost surely, 2^33223420493 is an apocalyptic number.

It is an amenable number.

33223420493 is a deficient number, since it is larger than the sum of its proper divisors (1).

33223420493 is an equidigital number, since it uses as much as digits as its factorization.

33223420493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 35.

The spelling of 33223420493 in words is "thirty-three billion, two hundred twenty-three million, four hundred twenty thousand, four hundred ninety-three".