8721769552 has 20 divisors (see below), whose sum is σ = 16905438196. Its totient is φ = 4359075840.

The previous prime is 8721769547. The next prime is 8721769591. The reversal of 8721769552 is 2559671278.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5796690496 + 2925079056 = 76136^2 + 54084^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8721769552.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72849 + ... + 150832.

Almost surely, 2^8721769552 is an apocalyptic number.

It is an amenable number.

8721769552 is a deficient number, since it is larger than the sum of its proper divisors (8183668644).

8721769552 is a wasteful number, since it uses less digits than its factorization.

8721769552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226126 (or 226120 counting only the distinct ones).

The product of its digits is 2116800, while the sum is 52.

The square root of 8721769552 is about 93390.4146687442. The cubic root of 8721769552 is about 2058.4241531688.

The spelling of 8721769552 in words is "eight billion, seven hundred twenty-one million, seven hundred sixty-nine thousand, five hundred fifty-two".