12156051750 has 64 divisors (see below), whose sum is σ = 30500720640. Its totient is φ = 3224604000.

The previous prime is 12156051749. The next prime is 12156051769. The reversal of 12156051750 is 5715065121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100821 + ... + 185679.

It is an arithmetic number, because the mean of its divisors is an integer number (476573760).

Almost surely, 2^12156051750 is an apocalyptic number.

12156051750 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 12156051750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15250360320).

12156051750 is an abundant number, since it is smaller than the sum of its proper divisors (18344668890).

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

12156051750 is a wasteful number, since it uses less digits than its factorization.

12156051750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85070 (or 85060 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 33.

The spelling of 12156051750 in words is "twelve billion, one hundred fifty-six million, fifty-one thousand, seven hundred fifty".