12820888649412 has 24 divisors (see below), whose sum is σ = 33239340943200. Its totient is φ = 4273629549768.

The previous prime is 12820888649363. The next prime is 12820888649423. The reversal of 12820888649412 is 21494688802821.

12820888649412 is a `hidden beast` number, since 1 + 2 + 8 + 20 + 88 + 86 + 49 + 412 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12820888649412.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59355965862 + ... + 59355966077.

It is an arithmetic number, because the mean of its divisors is an integer number (1384972539300).

Almost surely, 2^{12820888649412} is an apocalyptic number.

12820888649412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12820888649412 is an abundant number, since it is smaller than the sum of its proper divisors (20418452293788).

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

12820888649412 is a wasteful number, since it uses less digits than its factorization.

12820888649412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118711931952 (or 118711931944 counting only the distinct ones).

The product of its (nonzero) digits is 28311552, while the sum is 63.

The spelling of 12820888649412 in words is "twelve trillion, eight hundred twenty billion, eight hundred eighty-eight million, six hundred forty-nine thousand, four hundred twelve".