854944428872 has 8 divisors (see below), whose sum is σ = 1603020804150. Its totient is φ = 427472214432.

The previous prime is 854944428851. The next prime is 854944428929. The reversal of 854944428872 is 278824449458.

It can be written as a sum of positive squares in only one way, i.e., 783391388836 + 71553040036 = 885094^2 + 267494^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 854944428799 and 854944428808.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53434026797 + ... + 53434026812.

Almost surely, 2^854944428872 is an apocalyptic number.

It is an amenable number.

854944428872 is a deficient number, since it is larger than the sum of its proper divisors (748076375278).

854944428872 is a wasteful number, since it uses less digits than its factorization.

854944428872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106868053615 (or 106868053611 counting only the distinct ones).

The product of its digits is 165150720, while the sum is 65.

The spelling of 854944428872 in words is "eight hundred fifty-four billion, nine hundred forty-four million, four hundred twenty-eight thousand, eight hundred seventy-two".