12499985140 has 24 divisors (see below), whose sum is σ = 26582250240. Its totient is φ = 4936702368.

The previous prime is 12499985117. The next prime is 12499985143. The reversal of 12499985140 is 4158999421.

12499985140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12499985143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3954112 + ... + 3957271.

It is an arithmetic number, because the mean of its divisors is an integer number (1107593760).

Almost surely, 2^12499985140 is an apocalyptic number.

12499985140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12499985140 is an abundant number, since it is smaller than the sum of its proper divisors (14082265100).

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

12499985140 is a wasteful number, since it uses less digits than its factorization.

12499985140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7911471 (or 7911469 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 12499985140 in words is "twelve billion, four hundred ninety-nine million, nine hundred eighty-five thousand, one hundred forty".