133386865399 has 2 divisors, whose sum is σ = 133386865400. Its totient is φ = 133386865398.

The previous prime is 133386865397. The next prime is 133386865427. The reversal of 133386865399 is 993568683331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133386865399 - 2¹ = 133386865397 is a prime.

Together with 133386865397, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 133386865399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133386865393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66693432699 + 66693432700.

It is an arithmetic number, because the mean of its divisors is an integer number (66693432700).

Almost surely, 2^133386865399 is an apocalyptic number.

133386865399 is a deficient number, since it is larger than the sum of its proper divisors (1).

133386865399 is an equidigital number, since it uses as much as digits as its factorization.

133386865399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75582720, while the sum is 64.

The spelling of 133386865399 in words is "one hundred thirty-three billion, three hundred eighty-six million, eight hundred sixty-five thousand, three hundred ninety-nine".