12147891704 has 48 divisors (see below), whose sum is σ = 24698675520. Its totient is φ = 5598877440.

The previous prime is 12147891673. The next prime is 12147891719. The reversal of 12147891704 is 40719874121.

It is a super-2 number, since 2×12147891704² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1022969 + ... + 1034775.

It is an arithmetic number, because the mean of its divisors is an integer number (514555740).

Almost surely, 2^12147891704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12147891704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12349337760).

12147891704 is an abundant number, since it is smaller than the sum of its proper divisors (12550783816).

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

12147891704 is a wasteful number, since it uses less digits than its factorization.

12147891704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12600 (or 12583 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 12147891704 in words is "twelve billion, one hundred forty-seven million, eight hundred ninety-one thousand, seven hundred four".