12694224816 has 120 divisors (see below), whose sum is σ = 43724597280. Its totient is φ = 3347923968.

The previous prime is 12694224793. The next prime is 12694224817. The reversal of 12694224816 is 61842249621.

It is a happy number.

12694224816 is a `hidden beast` number, since 126 + 9 + 42 + 2 + 481 + 6 = 666.

It is a super-2 number, since 2×12694224816² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12694224817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 471261 + ... + 497468.

It is an arithmetic number, because the mean of its divisors is an integer number (364371644).

Almost surely, 2^12694224816 is an apocalyptic number.

12694224816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12694224816 is an abundant number, since it is smaller than the sum of its proper divisors (31030372464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12694224816 is a wasteful number, since it uses less digits than its factorization.

12694224816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968763 (or 968754 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The spelling of 12694224816 in words is "twelve billion, six hundred ninety-four million, two hundred twenty-four thousand, eight hundred sixteen".