12499138146 has 32 divisors (see below), whose sum is σ = 27512198208. Its totient is φ = 3754096640.

The previous prime is 12499138139. The next prime is 12499138153. The reversal of 12499138146 is 64183199421.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12499138139) and next prime (12499138153).

It is a junction number, because it is equal to n+sod(n) for n = 12499138095 and 12499138104.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 830511 + ... + 845426.

It is an arithmetic number, because the mean of its divisors is an integer number (859756194).

Almost surely, 2^12499138146 is an apocalyptic number.

12499138146 is an abundant number, since it is smaller than the sum of its proper divisors (15013060062).

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

12499138146 is a wasteful number, since it uses less digits than its factorization.

12499138146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1676066.

The product of its digits is 373248, while the sum is 48.

The spelling of 12499138146 in words is "twelve billion, four hundred ninety-nine million, one hundred thirty-eight thousand, one hundred forty-six".