16610531140213 has 4 divisors (see below), whose sum is σ = 16610956120620. Its totient is φ = 16610106159808.

The previous prime is 16610531140211. The next prime is 16610531140279. The reversal of 16610531140213 is 31204113501661.

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 11060958943204 + 5549572197009 = 3325802^2 + 2355753^2 .

It is a cyclic number.

It is not a de Polignac number, because 16610531140213 - 2¹ = 16610531140211 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 (16610531140211) 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, 212431570 + ... + 212509747.

It is an arithmetic number, because the mean of its divisors is an integer number (4152739030155).

Almost surely, 2^{16610531140213} is an apocalyptic number.

It is an amenable number.

16610531140213 is a deficient number, since it is larger than the sum of its proper divisors (424980407).

16610531140213 is an equidigital number, since it uses as much as digits as its factorization.

16610531140213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424980406.

The product of its (nonzero) digits is 12960, while the sum is 34.

Adding to 16610531140213 its reverse (31204113501661), we get a palindrome (47814644641874).

The spelling of 16610531140213 in words is "sixteen trillion, six hundred ten billion, five hundred thirty-one million, one hundred forty thousand, two hundred thirteen".