862783778445 has 32 divisors (see below), whose sum is σ = 1389513878400. Its totient is φ = 457133808384.

The previous prime is 862783778401. The next prime is 862783778453. The reversal of 862783778445 is 544877387268.

It is not a de Polignac number, because 862783778445 - 2⁸ = 862783778189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 862783778445.

It is a congruent number.

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, 5767251 + ... + 5914959.

It is an arithmetic number, because the mean of its divisors is an integer number (43422308700).

Almost surely, 2^862783778445 is an apocalyptic number.

It is an amenable number.

862783778445 is a deficient number, since it is larger than the sum of its proper divisors (526730099955).

862783778445 is a wasteful number, since it uses less digits than its factorization.

862783778445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150269.

The product of its digits is 505774080, while the sum is 69.

The spelling of 862783778445 in words is "eight hundred sixty-two billion, seven hundred eighty-three million, seven hundred seventy-eight thousand, four hundred forty-five".