79573075569 has 45 divisors (see below), whose sum is σ = 128768918619. Its totient is φ = 48947736240.

The previous prime is 79573075537. The next prime is 79573075583. The reversal of 79573075569 is 96557037597.

The square root of 79573075569 is 282087.

It is a perfect power (a square), and thus also a powerful number.

79573075569 is a `hidden beast` number, since 7 + 9 + 5 + 73 + 0 + 7 + 556 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11771165025 + 67801910544 = 108495^2 + 260388^2 .

It is not a de Polignac number, because 79573075569 - 2⁵ = 79573075537 is a prime.

It is a super-3 number, since 3×79573075569³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (79573275569) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 33002974 + ... + 33005384.

Almost surely, 2^79573075569 is an apocalyptic number.

79573075569 is the 282087-th square number.

79573075569 is the 141044-th centered octagonal number.

It is an amenable number.

79573075569 is a deficient number, since it is larger than the sum of its proper divisors (49195843050).

79573075569 is an frugal number, since it uses more digits than its factorization.

79573075569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860 (or 2427 counting only the distinct ones).

The product of its (nonzero) digits is 62511750, while the sum is 63.

The spelling of 79573075569 in words is "seventy-nine billion, five hundred seventy-three million, seventy-five thousand, five hundred sixty-nine".