12371137081 has 4 divisors (see below), whose sum is σ = 12491245312. Its totient is φ = 12251028852.

The previous prime is 12371137049. The next prime is 12371137087. The reversal of 12371137081 is 18073117321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12371137081 - 2⁵ = 12371137049 is a prime.

It is a super-2 number, since 2×12371137081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12371137087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60053961 + ... + 60054166.

It is an arithmetic number, because the mean of its divisors is an integer number (3122811328).

Almost surely, 2^12371137081 is an apocalyptic number.

It is an amenable number.

12371137081 is a deficient number, since it is larger than the sum of its proper divisors (120108231).

12371137081 is a wasteful number, since it uses less digits than its factorization.

12371137081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120108230.

The product of its (nonzero) digits is 7056, while the sum is 34.

The spelling of 12371137081 in words is "twelve billion, three hundred seventy-one million, one hundred thirty-seven thousand, eighty-one".