133491198429 has 18 divisors (see below), whose sum is σ = 204830212730. Its totient is φ = 83759181696.

The previous prime is 133491198389. The next prime is 133491198433. The reversal of 133491198429 is 924891194331.

133491198429 is a `hidden beast` number, since 13 + 34 + 91 + 1 + 98 + 429 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 82195743204 + 51295455225 = 286698^2 + 226485^2 .

It is not a de Polignac number, because 133491198429 - 2¹¹ = 133491196381 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133491198329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 25658914 + ... + 25664115.

Almost surely, 2^133491198429 is an apocalyptic number.

It is an amenable number.

133491198429 is a deficient number, since it is larger than the sum of its proper divisors (71339014301).

133491198429 is a wasteful number, since it uses less digits than its factorization.

133491198429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51323069 (or 51323049 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The spelling of 133491198429 in words is "one hundred thirty-three billion, four hundred ninety-one million, one hundred ninety-eight thousand, four hundred twenty-nine".