851844063944 has 8 divisors (see below), whose sum is σ = 1597207619910. Its totient is φ = 425922031968.

The previous prime is 851844063937. The next prime is 851844063953. The reversal of 851844063944 is 449360448158.

851844063944 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., 752643002500 + 99201061444 = 867550^2 + 314962^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 851844063944.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53240253989 + ... + 53240254004.

Almost surely, 2^851844063944 is an apocalyptic number.

It is an amenable number.

851844063944 is a deficient number, since it is larger than the sum of its proper divisors (745363555966).

851844063944 is a wasteful number, since it uses less digits than its factorization.

851844063944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106480507999 (or 106480507995 counting only the distinct ones).

The product of its (nonzero) digits is 13271040, while the sum is 56.

The spelling of 851844063944 in words is "eight hundred fifty-one billion, eight hundred forty-four million, sixty-three thousand, nine hundred forty-four".