12170099508 has 96 divisors (see below), whose sum is σ = 33178709760. Its totient is φ = 3400151040.

The previous prime is 12170099497. The next prime is 12170099509. The reversal of 12170099508 is 80599007121.

It is a super-2 number, since 2×12170099508² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 12170099508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12170099509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879588 + ... + 893316.

It is an arithmetic number, because the mean of its divisors is an integer number (345611560).

Almost surely, 2^12170099508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12170099508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16589354880).

12170099508 is an abundant number, since it is smaller than the sum of its proper divisors (21008610252).

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

12170099508 is a wasteful number, since it uses less digits than its factorization.

12170099508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13977 (or 13975 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 42.

The spelling of 12170099508 in words is "twelve billion, one hundred seventy million, ninety-nine thousand, five hundred eight".