862878812818 has 12 divisors (see below), whose sum is σ = 1422680357070. Its totient is φ = 392217642080.

The previous prime is 862878812771. The next prime is 862878812827. The reversal of 862878812818 is 818218878268.

862878812818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 627908853649 + 234969959169 = 792407^2 + 484737^2 .

It is a super-2 number, since 2×862878812818² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1782807223 + ... + 1782807706.

Almost surely, 2^862878812818 is an apocalyptic number.

862878812818 is a deficient number, since it is larger than the sum of its proper divisors (559801544252).

862878812818 is a wasteful number, since it uses less digits than its factorization.

862878812818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565614953 (or 3565614942 counting only the distinct ones).

The product of its digits is 44040192, while the sum is 67.

The spelling of 862878812818 in words is "eight hundred sixty-two billion, eight hundred seventy-eight million, eight hundred twelve thousand, eight hundred eighteen".