844520008004 has 6 divisors (see below), whose sum is σ = 1477910014014. Its totient is φ = 422260004000.

The previous prime is 844520007971. The next prime is 844520008021. The reversal of 844520008004 is 400800025448.

It can be written as a sum of positive squares in only one way, i.e., 788540448004 + 55979560000 = 887998^2 + 236600^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105565000997 + ... + 105565001004.

It is an arithmetic number, because the mean of its divisors is an integer number (246318335669).

Almost surely, 2^844520008004 is an apocalyptic number.

It is an amenable number.

844520008004 is a deficient number, since it is larger than the sum of its proper divisors (633390006010).

844520008004 is a wasteful number, since it uses less digits than its factorization.

844520008004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211130002005 (or 211130002003 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

The spelling of 844520008004 in words is "eight hundred forty-four billion, five hundred twenty million, eight thousand, four".