133113201000991 has 2 divisors, whose sum is σ = 133113201000992. Its totient is φ = 133113201000990.

The previous prime is 133113201000953. The next prime is 133113201001049. The reversal of 133113201000991 is 199000102311331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133113201000991 - 2¹⁹ = 133113200476703 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133113201000191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66556600500495 + 66556600500496.

It is an arithmetic number, because the mean of its divisors is an integer number (66556600500496).

Almost surely, 2^{133113201000991} is an apocalyptic number.

133113201000991 is a deficient number, since it is larger than the sum of its proper divisors (1).

133113201000991 is an equidigital number, since it uses as much as digits as its factorization.

133113201000991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 34.

The spelling of 133113201000991 in words is "one hundred thirty-three trillion, one hundred thirteen billion, two hundred one million, nine hundred ninety-one", and thus it is an aban number.