12045191730 has 128 divisors (see below), whose sum is σ = 35960391936. Its totient is φ = 2536857600.

The previous prime is 12045191723. The next prime is 12045191761. The reversal of 12045191730 is 3719154021.

12045191730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 12045191691 and 12045191700.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9651 + ... + 155510.

It is an arithmetic number, because the mean of its divisors is an integer number (280940562).

Almost surely, 2^12045191730 is an apocalyptic number.

12045191730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12045191730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17980195968).

12045191730 is an abundant number, since it is smaller than the sum of its proper divisors (23915200206).

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

12045191730 is a wasteful number, since it uses less digits than its factorization.

12045191730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165212.

The product of its (nonzero) digits is 7560, while the sum is 33.

The spelling of 12045191730 in words is "twelve billion, forty-five million, one hundred ninety-one thousand, seven hundred thirty".