849978636484 has 12 divisors (see below), whose sum is σ = 1487472893200. Its totient is φ = 424986381288.

The previous prime is 849978636467. The next prime is 849978636487. The reversal of 849978636484 is 484636879948.

849978636484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 849978636484.

It is not an unprimeable number, because it can be changed into a prime (849978636487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1914 + ... + 1303825.

Almost surely, 2^849978636484 is an apocalyptic number.

It is an amenable number.

849978636484 is a deficient number, since it is larger than the sum of its proper divisors (637494256716).

849978636484 is a wasteful number, since it uses less digits than its factorization.

849978636484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468482 (or 1468480 counting only the distinct ones).

The product of its digits is 2006581248, while the sum is 76.

The spelling of 849978636484 in words is "eight hundred forty-nine billion, nine hundred seventy-eight million, six hundred thirty-six thousand, four hundred eighty-four".