864777795884 has 48 divisors (see below), whose sum is σ = 1683005990400. Its totient is φ = 387091285056.

The previous prime is 864777795881. The next prime is 864777795899. The reversal of 864777795884 is 488597777468.

864777795884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 864777795799 and 864777795808.

It is not an unprimeable number, because it can be changed into a prime (864777795881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4070534 + ... + 4277709.

It is an arithmetic number, because the mean of its divisors is an integer number (35062624800).

Almost surely, 2^864777795884 is an apocalyptic number.

It is an amenable number.

864777795884 is a deficient number, since it is larger than the sum of its proper divisors (818228194516).

864777795884 is a wasteful number, since it uses less digits than its factorization.

864777795884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8348342 (or 8348340 counting only the distinct ones).

The product of its digits is 5310627840, while the sum is 80.

It can be divided in two parts, 864777 and 795884, that added together give a palindrome (1660661).

The spelling of 864777795884 in words is "eight hundred sixty-four billion, seven hundred seventy-seven million, seven hundred ninety-five thousand, eight hundred eighty-four".