12916288340 has 12 divisors (see below), whose sum is σ = 27124205556. Its totient is φ = 5166515328.

The previous prime is 12916288223. The next prime is 12916288367. The reversal of 12916288340 is 4388261921.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 10150159504 + 2766128836 = 100748^2 + 52594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12916288291 and 12916288300.

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, 322907189 + ... + 322907228.

It is an arithmetic number, because the mean of its divisors is an integer number (2260350463).

Almost surely, 2^12916288340 is an apocalyptic number.

12916288340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12916288340 is an abundant number, since it is smaller than the sum of its proper divisors (14207917216).

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

12916288340 is a wasteful number, since it uses less digits than its factorization.

12916288340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645814426 (or 645814424 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 12916288340 in words is "twelve billion, nine hundred sixteen million, two hundred eighty-eight thousand, three hundred forty".