12140678081 has 8 divisors (see below), whose sum is σ = 13875760704. Its totient is φ = 10405770480.

The previous prime is 12140678023. The next prime is 12140678101. The reversal of 12140678081 is 18087604121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12140678081 is a prime.

It is a super-2 number, since 2×12140678081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12140672081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183806 + ... + 240968.

It is an arithmetic number, because the mean of its divisors is an integer number (1734470088).

Almost surely, 2^12140678081 is an apocalyptic number.

It is an amenable number.

12140678081 is a deficient number, since it is larger than the sum of its proper divisors (1735082623).

12140678081 is an equidigital number, since it uses as much as digits as its factorization.

12140678081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87511.

The product of its (nonzero) digits is 21504, while the sum is 38.

The spelling of 12140678081 in words is "twelve billion, one hundred forty million, six hundred seventy-eight thousand, eighty-one".