12087603906 has 96 divisors (see below), whose sum is σ = 28557930240. Its totient is φ = 3400385184.

The previous prime is 12087603893. The next prime is 12087603919. The reversal of 12087603906 is 60930678021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12087603893) and next prime (12087603919).

It is a super-2 number, since 2×12087603906² (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 an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9247705 + ... + 9249011.

It is an arithmetic number, because the mean of its divisors is an integer number (297478440).

Almost surely, 2^12087603906 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12087603906, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14278965120).

12087603906 is an abundant number, since it is smaller than the sum of its proper divisors (16470326334).

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

12087603906 is a wasteful number, since it uses less digits than its factorization.

12087603906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788 (or 1781 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The spelling of 12087603906 in words is "twelve billion, eighty-seven million, six hundred three thousand, nine hundred six".