12143869920 has 720 divisors, whose sum is σ = 53726416128. Its totient is φ = 2560481280.

The previous prime is 12143869901. The next prime is 12143869943. The reversal of 12143869920 is 2996834121.

12143869920 is a `hidden beast` number, since 121 + 438 + 6 + 9 + 92 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 8254785 + ... + 8256255.

Almost surely, 2^12143869920 is an apocalyptic number.

12143869920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12143869920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26863208064).

12143869920 is an abundant number, since it is smaller than the sum of its proper divisors (41582546208).

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

12143869920 is a wasteful number, since it uses less digits than its factorization.

12143869920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525 (or 1501 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 12143869920 in words is "twelve billion, one hundred forty-three million, eight hundred sixty-nine thousand, nine hundred twenty".