12147178683 has 4 divisors (see below), whose sum is σ = 16196238248. Its totient is φ = 8098119120.

The previous prime is 12147178679. The next prime is 12147178709. The reversal of 12147178683 is 38687174121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12147178683 - 2² = 12147178679 is a prime.

It is a super-2 number, since 2×12147178683² (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 (12147178643) 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, 2024529778 + ... + 2024529783.

It is an arithmetic number, because the mean of its divisors is an integer number (4049059562).

Almost surely, 2^12147178683 is an apocalyptic number.

12147178683 is a deficient number, since it is larger than the sum of its proper divisors (4049059565).

12147178683 is an equidigital number, since it uses as much as digits as its factorization.

12147178683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049059564.

The product of its digits is 451584, while the sum is 48.

The spelling of 12147178683 in words is "twelve billion, one hundred forty-seven million, one hundred seventy-eight thousand, six hundred eighty-three".