12489005240 has 16 divisors (see below), whose sum is σ = 28100261880. Its totient is φ = 4995602080.

The previous prime is 12489005233. The next prime is 12489005279. The reversal of 12489005240 is 4250098421.

It is a self number, because there is not a number n which added to its sum of digits gives 12489005240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156112526 + ... + 156112605.

Almost surely, 2^12489005240 is an apocalyptic number.

12489005240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12489005240 is an abundant number, since it is smaller than the sum of its proper divisors (15611256640).

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

12489005240 is a wasteful number, since it uses less digits than its factorization.

12489005240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312225142 (or 312225138 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 12489005240 in words is "twelve billion, four hundred eighty-nine million, five thousand, two hundred forty".