12823811516 has 12 divisors (see below), whose sum is σ = 22443586032. Its totient is φ = 6411358368.

The previous prime is 12823811489. The next prime is 12823811563. The reversal of 12823811516 is 61511832821.

It is a super-3 number, since 3×12823811516³ (a number of 31 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12823811516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81665 + ... + 179768.

It is an arithmetic number, because the mean of its divisors is an integer number (1870298836).

Almost surely, 2^12823811516 is an apocalyptic number.

It is an amenable number.

12823811516 is a deficient number, since it is larger than the sum of its proper divisors (9619774516).

12823811516 is a wasteful number, since it uses less digits than its factorization.

12823811516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273700 (or 273698 counting only the distinct ones).

The product of its digits is 23040, while the sum is 38.

The spelling of 12823811516 in words is "twelve billion, eight hundred twenty-three million, eight hundred eleven thousand, five hundred sixteen".