844729139572 has 6 divisors (see below), whose sum is σ = 1478275994258. Its totient is φ = 422364569784.

The previous prime is 844729139567. The next prime is 844729139629. The reversal of 844729139572 is 275931927448.

844729139572 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., 824017324516 + 20711815056 = 907754^2 + 143916^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 844729139572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105591142443 + ... + 105591142450.

Almost surely, 2^844729139572 is an apocalyptic number.

It is an amenable number.

844729139572 is a deficient number, since it is larger than the sum of its proper divisors (633546854686).

844729139572 is a wasteful number, since it uses less digits than its factorization.

844729139572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211182284897 (or 211182284895 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 61.

The spelling of 844729139572 in words is "eight hundred forty-four billion, seven hundred twenty-nine million, one hundred thirty-nine thousand, five hundred seventy-two".