12816435507 has 8 divisors (see below), whose sum is σ = 18093791376. Its totient is φ = 8041684992.

The previous prime is 12816435491. The next prime is 12816435523. The reversal of 12816435507 is 70553461821.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12816435491) and next prime (12816435523).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12816435507 - 2⁴ = 12816435491 is a prime.

It is a super-2 number, since 2×12816435507² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (12816435547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125651278 + ... + 125651379.

It is an arithmetic number, because the mean of its divisors is an integer number (2261723922).

Almost surely, 2^12816435507 is an apocalyptic number.

12816435507 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12816435507 is a deficient number, since it is larger than the sum of its proper divisors (5277355869).

12816435507 is a wasteful number, since it uses less digits than its factorization.

12816435507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251302677.

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 12816435507 in words is "twelve billion, eight hundred sixteen million, four hundred thirty-five thousand, five hundred seven".