12347834681 has 16 divisors (see below), whose sum is σ = 15290588544. Its totient is φ = 9709766784.

The previous prime is 12347834623. The next prime is 12347834699. The reversal of 12347834681 is 18643874321.

It is a cyclic number.

It is not a de Polignac number, because 12347834681 - 2⁶ = 12347834617 is a prime.

It is a super-2 number, since 2×12347834681² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12347834581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401396 + ... + 431061.

It is an arithmetic number, because the mean of its divisors is an integer number (955661784).

Almost surely, 2^12347834681 is an apocalyptic number.

It is an amenable number.

12347834681 is a deficient number, since it is larger than the sum of its proper divisors (2942753863).

12347834681 is a wasteful number, since it uses less digits than its factorization.

12347834681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832640.

The product of its digits is 774144, while the sum is 47.

The spelling of 12347834681 in words is "twelve billion, three hundred forty-seven million, eight hundred thirty-four thousand, six hundred eighty-one".