33504042191 has 2 divisors, whose sum is σ = 33504042192. Its totient is φ = 33504042190.

The previous prime is 33504042181. The next prime is 33504042223. The reversal of 33504042191 is 19124040533.

It is an a-pointer prime, because the next prime (33504042223) can be obtained adding 33504042191 to its sum of digits (32).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33504042191 is a prime.

It is a super-2 number, since 2×33504042191² (a number of 22 digits) contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33504042151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16752021095 + 16752021096.

It is an arithmetic number, because the mean of its divisors is an integer number (16752021096).

Almost surely, 2^33504042191 is an apocalyptic number.

33504042191 is a deficient number, since it is larger than the sum of its proper divisors (1).

33504042191 is an equidigital number, since it uses as much as digits as its factorization.

33504042191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 33504042191 in words is "thirty-three billion, five hundred four million, forty-two thousand, one hundred ninety-one".