133546134437 has 4 divisors (see below), whose sum is σ = 133602037260. Its totient is φ = 133490231616.

The previous prime is 133546134427. The next prime is 133546134457. The reversal of 133546134437 is 734431645331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65699429761 + 67846704676 = 256319^2 + 260474^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133546134437 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 (133546134427) 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, 27947828 + ... + 27952605.

It is an arithmetic number, because the mean of its divisors is an integer number (33400509315).

Almost surely, 2^133546134437 is an apocalyptic number.

It is an amenable number.

133546134437 is a deficient number, since it is larger than the sum of its proper divisors (55902823).

133546134437 is an equidigital number, since it uses as much as digits as its factorization.

133546134437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55902822.

The product of its digits is 1088640, while the sum is 44.

Adding to 133546134437 its reverse (734431645331), we get a palindrome (867977779768).

The spelling of 133546134437 in words is "one hundred thirty-three billion, five hundred forty-six million, one hundred thirty-four thousand, four hundred thirty-seven".