12781170416 has 20 divisors (see below), whose sum is σ = 28301163312. Its totient is φ = 5477644416.

The previous prime is 12781170407. The next prime is 12781170431. The reversal of 12781170416 is 61407118721.

It is a super-2 number, since 2×12781170416² (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 12781170416.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 57058685 + ... + 57058908.

Almost surely, 2^12781170416 is an apocalyptic number.

12781170416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12781170416 is an abundant number, since it is smaller than the sum of its proper divisors (15519992896).

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

12781170416 is a wasteful number, since it uses less digits than its factorization.

12781170416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114117608 (or 114117602 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 38.

The spelling of 12781170416 in words is "twelve billion, seven hundred eighty-one million, one hundred seventy thousand, four hundred sixteen".