133534612391 has 2 divisors, whose sum is σ = 133534612392. Its totient is φ = 133534612390.

The previous prime is 133534612363. The next prime is 133534612457. The reversal of 133534612391 is 193216435331.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133534612391 - 2²⁶ = 133467503527 is a prime.

It is a super-2 number, since 2×133534612391² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133534612361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66767306195 + 66767306196.

It is an arithmetic number, because the mean of its divisors is an integer number (66767306196).

Almost surely, 2^133534612391 is an apocalyptic number.

133534612391 is a deficient number, since it is larger than the sum of its proper divisors (1).

133534612391 is an equidigital number, since it uses as much as digits as its factorization.

133534612391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 41.

The spelling of 133534612391 in words is "one hundred thirty-three billion, five hundred thirty-four million, six hundred twelve thousand, three hundred ninety-one".