987220022789 has 32 divisors (see below), whose sum is σ = 1325643411456. Its totient is φ = 710010544320.

The previous prime is 987220022743. The next prime is 987220022819.

It is a happy number.

987220022789 is nontrivially palindromic in base 10.

987220022789 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 987220022789 - 2⁸ = 987220022533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (987220022729) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10028084 + ... + 10126050.

It is an arithmetic number, because the mean of its divisors is an integer number (41426356608).

Almost surely, 2^987220022789 is an apocalyptic number.

It is an amenable number.

987220022789 is a deficient number, since it is larger than the sum of its proper divisors (338423388667).

987220022789 is a wasteful number, since it uses less digits than its factorization.

987220022789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108065.

The product of its (nonzero) digits is 4064256, while the sum is 56.

It can be divided in two parts, 9872200 and 22789, that added together give a palindrome (9894989).

The spelling of 987220022789 in words is "nine hundred eighty-seven billion, two hundred twenty million, twenty-two thousand, seven hundred eighty-nine".