2081228368589 has 4 divisors (see below), whose sum is σ = 2081307268224. Its totient is φ = 2081149468956.

The previous prime is 2081228368529. The next prime is 2081228368603. The reversal of 2081228368589 is 9858638221802.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2081228368589 - 2⁸ = 2081228368333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081228368529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39410237 + ... + 39463010.

It is an arithmetic number, because the mean of its divisors is an integer number (520326817056).

Almost surely, 2^{2081228368589} is an apocalyptic number.

It is an amenable number.

2081228368589 is a deficient number, since it is larger than the sum of its proper divisors (78899635).

2081228368589 is an equidigital number, since it uses as much as digits as its factorization.

2081228368589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78899634.

The product of its (nonzero) digits is 26542080, while the sum is 62.

The spelling of 2081228368589 in words is "two trillion, eighty-one billion, two hundred twenty-eight million, three hundred sixty-eight thousand, five hundred eighty-nine".