12487015992 has 96 divisors (see below), whose sum is σ = 35942503680. Its totient is φ = 3584761920.

The previous prime is 12487015969. The next prime is 12487016021. The reversal of 12487015992 is 29951078421.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29793 + ... + 160815.

It is an arithmetic number, because the mean of its divisors is an integer number (374401080).

Almost surely, 2^12487015992 is an apocalyptic number.

12487015992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12487015992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17971251840).

12487015992 is an abundant number, since it is smaller than the sum of its proper divisors (23455487688).

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

12487015992 is a wasteful number, since it uses less digits than its factorization.

12487015992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131081 (or 131058 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 48.

The spelling of 12487015992 in words is "twelve billion, four hundred eighty-seven million, fifteen thousand, nine hundred ninety-two".