2820805680531 has 16 divisors (see below), whose sum is σ = 3774042661248. Its totient is φ = 1874061840000.

The previous prime is 2820805680529. The next prime is 2820805680557. The reversal of 2820805680531 is 1350865080282.

2820805680531 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 2820805680531 - 2¹ = 2820805680529 is a prime.

It is a super-2 number, since 2×2820805680531² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2820805680031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 148840 + ... + 2379866.

It is an arithmetic number, because the mean of its divisors is an integer number (235877666328).

Almost surely, 2^{2820805680531} is an apocalyptic number.

2820805680531 is a deficient number, since it is larger than the sum of its proper divisors (953236980717).

2820805680531 is a wasteful number, since it uses less digits than its factorization.

2820805680531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232482.

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 2820805680531 in words is "two trillion, eight hundred twenty billion, eight hundred five million, six hundred eighty thousand, five hundred thirty-one".