12720892608 has 84 divisors (see below), whose sum is σ = 36489543480. Its totient is φ = 4237111296.

The previous prime is 12720892579. The next prime is 12720892621. The reversal of 12720892608 is 80629802721.

12720892608 is a `hidden beast` number, since 12 + 7 + 20 + 8 + 9 + 2 + 608 = 666.

12720892608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12720892608² (a number of 21 digits) contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 832816 + ... + 847952.

Almost surely, 2^12720892608 is an apocalyptic number.

12720892608 is a gapful number since it is divisible by the number (18) 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 12720892608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18244771740).

12720892608 is an abundant number, since it is smaller than the sum of its proper divisors (23768650872).

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

12720892608 is a wasteful number, since it uses less digits than its factorization.

12720892608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16614 (or 16601 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The spelling of 12720892608 in words is "twelve billion, seven hundred twenty million, eight hundred ninety-two thousand, six hundred eight".