133126000165 has 4 divisors (see below), whose sum is σ = 159751200204. Its totient is φ = 106500800128.

The previous prime is 133126000151. The next prime is 133126000169. The reversal of 133126000165 is 561000621331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561000621331 = 334493 ⋅1677167.

It can be written as a sum of positive squares in 2 ways, for example, as 32397840036 + 100728160129 = 179994^2 + 317377^2 .

It is a cyclic number.

It is not a de Polignac number, because 133126000165 - 2¹⁹ = 133125475877 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 (133126000169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13312600012 + ... + 13312600021.

It is an arithmetic number, because the mean of its divisors is an integer number (39937800051).

Almost surely, 2^133126000165 is an apocalyptic number.

It is an amenable number.

133126000165 is a deficient number, since it is larger than the sum of its proper divisors (26625200039).

133126000165 is an equidigital number, since it uses as much as digits as its factorization.

133126000165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26625200038.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 133126000165 its reverse (561000621331), we get a palindrome (694126621496).

The spelling of 133126000165 in words is "one hundred thirty-three billion, one hundred twenty-six million, one hundred sixty-five", and thus it is an aban number.