133300011491 has 2 divisors, whose sum is σ = 133300011492. Its totient is φ = 133300011490.

The previous prime is 133300011473. The next prime is 133300011517. The reversal of 133300011491 is 194110003331.

It is an a-pointer prime, because the next prime (133300011517) can be obtained adding 133300011491 to its sum of digits (26).

It is a weak prime.

It is an emirp because it is prime and its reverse (194110003331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133300011491 - 2³⁰ = 132226269667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133300011491.

It is not a weakly prime, because it can be changed into another prime (133300011421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66650005745 + 66650005746.

It is an arithmetic number, because the mean of its divisors is an integer number (66650005746).

Almost surely, 2^133300011491 is an apocalyptic number.

133300011491 is a deficient number, since it is larger than the sum of its proper divisors (1).

133300011491 is an equidigital number, since it uses as much as digits as its factorization.

133300011491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The spelling of 133300011491 in words is "one hundred thirty-three billion, three hundred million, eleven thousand, four hundred ninety-one".