83789220905 has 24 divisors (see below), whose sum is σ = 114280459272. Its totient is φ = 58618515456.

The previous prime is 83789220877. The next prime is 83789220923. The reversal of 83789220905 is 50902298738.

It can be written as a sum of positive squares in 4 ways, for example, as 120187369 + 83669033536 = 10963^2 + 289256^2 .

It is not a de Polignac number, because 83789220905 - 2⁸ = 83789220649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1761944 + ... + 1808873.

It is an arithmetic number, because the mean of its divisors is an integer number (4761685803).

Almost surely, 2^83789220905 is an apocalyptic number.

It is an amenable number.

83789220905 is a deficient number, since it is larger than the sum of its proper divisors (30491238367).

83789220905 is a wasteful number, since it uses less digits than its factorization.

83789220905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570873 (or 3570854 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 83789220905 in words is "eighty-three billion, seven hundred eighty-nine million, two hundred twenty thousand, nine hundred five".