16731325133 has 4 divisors (see below), whose sum is σ = 16745350908. Its totient is φ = 16717299360.

The previous prime is 16731325129. The next prime is 16731325147. The reversal of 16731325133 is 33152313761.

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 4844438404 + 11886886729 = 69602^2 + 109027^2 .

It is a cyclic number.

It is not a de Polignac number, because 16731325133 - 2² = 16731325129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16731325093 and 16731325102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16731325123) 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, 7011098 + ... + 7013483.

It is an arithmetic number, because the mean of its divisors is an integer number (4186337727).

Almost surely, 2^16731325133 is an apocalyptic number.

It is an amenable number.

16731325133 is a deficient number, since it is larger than the sum of its proper divisors (14025775).

16731325133 is a wasteful number, since it uses less digits than its factorization.

16731325133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14025774.

The product of its digits is 34020, while the sum is 35.

Adding to 16731325133 its reverse (33152313761), we get a palindrome (49883638894).

The spelling of 16731325133 in words is "sixteen billion, seven hundred thirty-one million, three hundred twenty-five thousand, one hundred thirty-three".