12734467781 has 32 divisors (see below), whose sum is σ = 15301923840. Its totient is φ = 10372018176.

The previous prime is 12734467777. The next prime is 12734467807. The reversal of 12734467781 is 18776443721.

12734467781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12734467781 - 2² = 12734467777 is a prime.

It is a super-2 number, since 2×12734467781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12734467721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1687625 + ... + 1695153.

It is an arithmetic number, because the mean of its divisors is an integer number (478185120).

Almost surely, 2^12734467781 is an apocalyptic number.

It is an amenable number.

12734467781 is a deficient number, since it is larger than the sum of its proper divisors (2567456059).

12734467781 is an equidigital number, since it uses as much as digits as its factorization.

12734467781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7733.

The product of its digits is 1580544, while the sum is 50.

The spelling of 12734467781 in words is "twelve billion, seven hundred thirty-four million, four hundred sixty-seven thousand, seven hundred eighty-one".