12170786502 has 48 divisors (see below), whose sum is σ = 28393113600. Its totient is φ = 3467861712.

The previous prime is 12170786501. The next prime is 12170786561. The reversal of 12170786502 is 20568707121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12170786501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51499 + ... + 164297.

It is an arithmetic number, because the mean of its divisors is an integer number (591523200).

Almost surely, 2^12170786502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12170786502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14196556800).

12170786502 is an abundant number, since it is smaller than the sum of its proper divisors (16222327098).

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

12170786502 is a wasteful number, since it uses less digits than its factorization.

12170786502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113185 (or 113178 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 39.

The spelling of 12170786502 in words is "twelve billion, one hundred seventy million, seven hundred eighty-six thousand, five hundred two".