83864382545 has 32 divisors (see below), whose sum is σ = 104740020000. Its totient is φ = 64416798720.

The previous prime is 83864382527. The next prime is 83864382557. The reversal of 83864382545 is 54528346838.

It can be written as a sum of positive squares in 16 ways, for example, as 23998037569 + 59866344976 = 154913^2 + 244676^2 .

It is not a de Polignac number, because 83864382545 - 2²⁴ = 83847605329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3316811 + ... + 3341999.

It is an arithmetic number, because the mean of its divisors is an integer number (3273125625).

Almost surely, 2^83864382545 is an apocalyptic number.

It is an amenable number.

83864382545 is a deficient number, since it is larger than the sum of its proper divisors (20875637455).

83864382545 is a wasteful number, since it uses less digits than its factorization.

83864382545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25493.

The product of its digits is 22118400, while the sum is 56.

The spelling of 83864382545 in words is "eighty-three billion, eight hundred sixty-four million, three hundred eighty-two thousand, five hundred forty-five".