33133020091 has 2 divisors, whose sum is σ = 33133020092. Its totient is φ = 33133020090.

The previous prime is 33133020023. The next prime is 33133020127. The reversal of 33133020091 is 19002033133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33133020091 - 2²¹ = 33130922939 is a prime.

It is not a weakly prime, because it can be changed into another prime (33133020391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16566510045 + 16566510046.

It is an arithmetic number, because the mean of its divisors is an integer number (16566510046).

Almost surely, 2^33133020091 is an apocalyptic number.

33133020091 is a deficient number, since it is larger than the sum of its proper divisors (1).

33133020091 is an equidigital number, since it uses as much as digits as its factorization.

33133020091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1458, while the sum is 25.

The spelling of 33133020091 in words is "thirty-three billion, one hundred thirty-three million, twenty thousand, ninety-one".