12509010012 has 96 divisors (see below), whose sum is σ = 32098590720. Its totient is φ = 3776552640.

The previous prime is 12509009999. The next prime is 12509010047. The reversal of 12509010012 is 21001090521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 575983 + ... + 597305.

It is an arithmetic number, because the mean of its divisors is an integer number (334360320).

Almost surely, 2^12509010012 is an apocalyptic number.

12509010012 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 12509010012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16049295360).

12509010012 is an abundant number, since it is smaller than the sum of its proper divisors (19589580708).

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

12509010012 is a wasteful number, since it uses less digits than its factorization.

12509010012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21463 (or 21461 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 21.

The spelling of 12509010012 in words is "twelve billion, five hundred nine million, ten thousand, twelve".