33545340391 has 2 divisors, whose sum is σ = 33545340392. Its totient is φ = 33545340390.

The previous prime is 33545340379. The next prime is 33545340401. The reversal of 33545340391 is 19304354533.

It is a strong prime.

It is an emirp because it is prime and its reverse (19304354533) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33545340391 - 2¹⁵ = 33545307623 is a prime.

It is a super-2 number, since 2×33545340391² (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 (33545340791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16772670195 + 16772670196.

It is an arithmetic number, because the mean of its divisors is an integer number (16772670196).

Almost surely, 2^33545340391 is an apocalyptic number.

33545340391 is a deficient number, since it is larger than the sum of its proper divisors (1).

33545340391 is an equidigital number, since it uses as much as digits as its factorization.

33545340391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 291600, while the sum is 40.

The spelling of 33545340391 in words is "thirty-three billion, five hundred forty-five million, three hundred forty thousand, three hundred ninety-one".