854189971144 has 32 divisors (see below), whose sum is σ = 1624271486400. Its totient is φ = 421051704640.

The previous prime is 854189971111. The next prime is 854189971153. The reversal of 854189971144 is 441179981458.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10516962 + ... + 10597870.

It is an arithmetic number, because the mean of its divisors is an integer number (50758483950).

Almost surely, 2^854189971144 is an apocalyptic number.

It is an amenable number.

854189971144 is a deficient number, since it is larger than the sum of its proper divisors (770081515256).

854189971144 is a wasteful number, since it uses less digits than its factorization.

854189971144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99573 (or 99569 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 61.

The spelling of 854189971144 in words is "eight hundred fifty-four billion, one hundred eighty-nine million, nine hundred seventy-one thousand, one hundred forty-four".