12693281320 has 32 divisors (see below), whose sum is σ = 28986156000. Its totient is φ = 5001530688.

The previous prime is 12693281311. The next prime is 12693281329. The reversal of 12693281320 is 2318239621.

It is an interprime number because it is at equal distance from previous prime (12693281311) and next prime (12693281329).

It is a super-2 number, since 2×12693281320² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12693281320.

It is not an unprimeable number, because it can be changed into a prime (12693281329) 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, 2365470 + ... + 2370829.

It is an arithmetic number, because the mean of its divisors is an integer number (905817375).

Almost surely, 2^12693281320 is an apocalyptic number.

12693281320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12693281320 is an abundant number, since it is smaller than the sum of its proper divisors (16292874680).

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

12693281320 is a wasteful number, since it uses less digits than its factorization.

12693281320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736377 (or 4736373 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 12693281320 in words is "twelve billion, six hundred ninety-three million, two hundred eighty-one thousand, three hundred twenty".