12115423072 has 12 divisors (see below), whose sum is σ = 23852239236. Its totient is φ = 6057711520.

The previous prime is 12115423057. The next prime is 12115423097. The reversal of 12115423072 is 27032451121.

It is a self number, because there is not a number n which added to its sum of digits gives 12115423072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189303454 + ... + 189303517.

It is an arithmetic number, because the mean of its divisors is an integer number (1987686603).

Almost surely, 2^12115423072 is an apocalyptic number.

It is an amenable number.

12115423072 is a deficient number, since it is larger than the sum of its proper divisors (11736816164).

12115423072 is an equidigital number, since it uses as much as digits as its factorization.

12115423072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378606981 (or 378606973 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

Adding to 12115423072 its reverse (27032451121), we get a palindrome (39147874193).

The spelling of 12115423072 in words is "twelve billion, one hundred fifteen million, four hundred twenty-three thousand, seventy-two".