12855460020 has 96 divisors (see below), whose sum is σ = 38933973120. Its totient is φ = 3150558720.

The previous prime is 12855460003. The next prime is 12855460043. The reversal of 12855460020 is 2006455821.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142635 + ... + 214605.

It is an arithmetic number, because the mean of its divisors is an integer number (405562220).

Almost surely, 2^12855460020 is an apocalyptic number.

12855460020 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 12855460020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19466986560).

12855460020 is an abundant number, since it is smaller than the sum of its proper divisors (26078513100).

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

12855460020 is a wasteful number, since it uses less digits than its factorization.

12855460020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72225 (or 72223 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The spelling of 12855460020 in words is "twelve billion, eight hundred fifty-five million, four hundred sixty thousand, twenty".