75579356889 has 9 divisors (see below), whose sum is σ = 109171373493. Its totient is φ = 50385688092.

The previous prime is 75579356887. The next prime is 75579356893. The reversal of 75579356889 is 98865397557.

The square root of 75579356889 is 274917.

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

75579356889 is a `hidden beast` number, since 7 + 5 + 57 + 9 + 3 + 568 + 8 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 75579356889 - 2¹ = 75579356887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75579356887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 778932 + ... + 870570.

Almost surely, 2^75579356889 is an apocalyptic number.

75579356889 is the 274917-th square number.

75579356889 is the 137459-th centered octagonal number.

It is an amenable number.

75579356889 is a deficient number, since it is larger than the sum of its proper divisors (33592016604).

75579356889 is an frugal number, since it uses more digits than its factorization.

75579356889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183284 (or 91642 counting only the distinct ones).

The product of its digits is 571536000, while the sum is 72.

The spelling of 75579356889 in words is "seventy-five billion, five hundred seventy-nine million, three hundred fifty-six thousand, eight hundred eighty-nine".