844151072164 has 12 divisors (see below), whose sum is σ = 1477750819804. Its totient is φ = 421936552224.

The previous prime is 844151072153. The next prime is 844151072183. The reversal of 844151072164 is 461270151448.

It can be written as a sum of positive squares in 2 ways, for example, as 615820006564 + 228331065600 = 784742^2 + 477840^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 844151072164.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34732299 + ... + 34756594.

Almost surely, 2^844151072164 is an apocalyptic number.

It is an amenable number.

844151072164 is a deficient number, since it is larger than the sum of its proper divisors (633599747640).

844151072164 is a wasteful number, since it uses less digits than its factorization.

844151072164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69491934 (or 69491932 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 844151072164 in words is "eight hundred forty-four billion, one hundred fifty-one million, seventy-two thousand, one hundred sixty-four".