12342816871 has 40 divisors (see below), whose sum is σ = 15714357120. Its totient is φ = 9495354000.

The previous prime is 12342816847. The next prime is 12342816877. The reversal of 12342816871 is 17861824321.

It is not a de Polignac number, because 12342816871 - 2⁵ = 12342816839 is a prime.

It is a super-2 number, since 2×12342816871² (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 (12342816877) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 8505696 + ... + 8507146.

It is an arithmetic number, because the mean of its divisors is an integer number (392858928).

Almost surely, 2^12342816871 is an apocalyptic number.

12342816871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12342816871 is a deficient number, since it is larger than the sum of its proper divisors (3371540249).

12342816871 is an frugal number, since it uses more digits than its factorization.

12342816871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1585 (or 1552 counting only the distinct ones).

The product of its digits is 129024, while the sum is 43.

The spelling of 12342816871 in words is "twelve billion, three hundred forty-two million, eight hundred sixteen thousand, eight hundred seventy-one".