12489281072 has 10 divisors (see below), whose sum is σ = 24197982108. Its totient is φ = 6244640528.

The previous prime is 12489281053. The next prime is 12489281099. The reversal of 12489281072 is 27018298421.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 390290018 + ... + 390290049.

Almost surely, 2^12489281072 is an apocalyptic number.

It is an amenable number.

12489281072 is a deficient number, since it is larger than the sum of its proper divisors (11708701036).

12489281072 is an equidigital number, since it uses as much as digits as its factorization.

12489281072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780580075 (or 780580069 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The spelling of 12489281072 in words is "twelve billion, four hundred eighty-nine million, two hundred eighty-one thousand, seventy-two".