33145440191 has 2 divisors, whose sum is σ = 33145440192. Its totient is φ = 33145440190.

The previous prime is 33145440151. The next prime is 33145440241. The reversal of 33145440191 is 19104454133.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33145440191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33145440101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16572720095 + 16572720096.

It is an arithmetic number, because the mean of its divisors is an integer number (16572720096).

Almost surely, 2^33145440191 is an apocalyptic number.

33145440191 is a deficient number, since it is larger than the sum of its proper divisors (1).

33145440191 is an equidigital number, since it uses as much as digits as its factorization.

33145440191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The spelling of 33145440191 in words is "thirty-three billion, one hundred forty-five million, four hundred forty thousand, one hundred ninety-one".