12158622720 has 352 divisors, whose sum is σ = 43501861440. Its totient is φ = 3220439040.

The previous prime is 12158622713. The next prime is 12158622731. The reversal of 12158622720 is 2722685121.

It is a happy number.

12158622720 is a `hidden beast` number, since 1 + 2 + 1 + 5 + 8 + 622 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 38845284 + ... + 38845596.

Almost surely, 2^12158622720 is an apocalyptic number.

12158622720 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 12158622720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21750930720).

12158622720 is an abundant number, since it is smaller than the sum of its proper divisors (31343238720).

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

12158622720 is a wasteful number, since it uses less digits than its factorization.

12158622720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 604 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 12158622720 in words is "twelve billion, one hundred fifty-eight million, six hundred twenty-two thousand, seven hundred twenty".