33240406393 has 2 divisors, whose sum is σ = 33240406394. Its totient is φ = 33240406392.

The previous prime is 33240406343. The next prime is 33240406439. The reversal of 33240406393 is 39360404233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25655389929 + 7585016464 = 160173^2 + 87092^2 .

It is a cyclic number.

It is not a de Polignac number, because 33240406393 - 2¹³ = 33240398201 is a prime.

It is a super-2 number, since 2×33240406393² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33240406313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16620203196 + 16620203197.

It is an arithmetic number, because the mean of its divisors is an integer number (16620203197).

Almost surely, 2^33240406393 is an apocalyptic number.

It is an amenable number.

33240406393 is a deficient number, since it is larger than the sum of its proper divisors (1).

33240406393 is an equidigital number, since it uses as much as digits as its factorization.

33240406393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 37.

The spelling of 33240406393 in words is "thirty-three billion, two hundred forty million, four hundred six thousand, three hundred ninety-three".