12820990755 has 16 divisors (see below), whose sum is σ = 20639439360. Its totient is φ = 6795910368.

The previous prime is 12820990727. The next prime is 12820990769. The reversal of 12820990755 is 55709902821.

12820990755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12820990755 - 2⁵ = 12820990723 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 2619435 + ... + 2624324.

It is an arithmetic number, because the mean of its divisors is an integer number (1289964960).

Almost surely, 2^12820990755 is an apocalyptic number.

12820990755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12820990755 is a deficient number, since it is larger than the sum of its proper divisors (7818448605).

12820990755 is a wasteful number, since it uses less digits than its factorization.

12820990755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243930.

The product of its (nonzero) digits is 453600, while the sum is 48.

The spelling of 12820990755 in words is "twelve billion, eight hundred twenty million, nine hundred ninety thousand, seven hundred fifty-five".