133158831797 has 4 divisors (see below), whose sum is σ = 137454278016. Its totient is φ = 128863385580.

The previous prime is 133158831781. The next prime is 133158831847. The reversal of 133158831797 is 797138851331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 133158831797 - 2⁴ = 133158831781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133158830797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2147723063 + ... + 2147723124.

It is an arithmetic number, because the mean of its divisors is an integer number (34363569504).

Almost surely, 2^133158831797 is an apocalyptic number.

It is an amenable number.

133158831797 is a deficient number, since it is larger than the sum of its proper divisors (4295446219).

133158831797 is an equidigital number, since it uses as much as digits as its factorization.

133158831797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4295446218.

The product of its digits is 3810240, while the sum is 56.

The spelling of 133158831797 in words is "one hundred thirty-three billion, one hundred fifty-eight million, eight hundred thirty-one thousand, seven hundred ninety-seven".