16513135202 has 4 divisors (see below), whose sum is σ = 24769702806. Its totient is φ = 8256567600.

The previous prime is 16513135193. The next prime is 16513135207. The reversal of 16513135202 is 20253131561.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20253131561 = 13 ⋅1557933197.

It can be written as a sum of positive squares in only one way, i.e., 16340764561 + 172370641 = 127831^2 + 13129^2 .

It is not an unprimeable number, because it can be changed into a prime (16513135207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4128283799 + ... + 4128283802.

Almost surely, 2^16513135202 is an apocalyptic number.

16513135202 is a deficient number, since it is larger than the sum of its proper divisors (8256567604).

16513135202 is an equidigital number, since it uses as much as digits as its factorization.

16513135202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8256567603.

The product of its (nonzero) digits is 5400, while the sum is 29.

Adding to 16513135202 its reverse (20253131561), we get a palindrome (36766266763).

The spelling of 16513135202 in words is "sixteen billion, five hundred thirteen million, one hundred thirty-five thousand, two hundred two".