12147142836 has 12 divisors (see below), whose sum is σ = 28343333312. Its totient is φ = 4049047608.

The previous prime is 12147142831. The next prime is 12147142837. The reversal of 12147142836 is 63824174121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×12147142836² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12147142794 and 12147142803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12147142831) 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, 506130940 + ... + 506130963.

Almost surely, 2^12147142836 is an apocalyptic number.

It is an amenable number.

12147142836 is an abundant number, since it is smaller than the sum of its proper divisors (16196190476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12147142836 is a wasteful number, since it uses less digits than its factorization.

12147142836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1012261910 (or 1012261908 counting only the distinct ones).

The product of its digits is 64512, while the sum is 39.

The spelling of 12147142836 in words is "twelve billion, one hundred forty-seven million, one hundred forty-two thousand, eight hundred thirty-six".