65875895569 has 9 divisors (see below), whose sum is σ = 72412145659. Its totient is φ = 59884611160.

The previous prime is 65875895567. The next prime is 65875895593. The reversal of 65875895569 is 96559857856.

The square root of 65875895569 is 256663.

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

It can be written as a sum of positive squares in only one way, i.e., 2466612225 + 63409283344 = 49665^2 + 251812^2 .

It is not a de Polignac number, because 65875895569 - 2¹ = 65875895567 is a prime.

It is a super-2 number, since 2×65875895569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65875895563) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2811627 + ... + 2834959.

Almost surely, 2^65875895569 is an apocalyptic number.

65875895569 is the 256663-rd square number.

65875895569 is the 128332-nd centered octagonal number.

It is an amenable number.

65875895569 is a deficient number, since it is larger than the sum of its proper divisors (6536250090).

65875895569 is an frugal number, since it uses more digits than its factorization.

65875895569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46688 (or 23344 counting only the distinct ones).

The product of its digits is 816480000, while the sum is 73.

The spelling of 65875895569 in words is "sixty-five billion, eight hundred seventy-five million, eight hundred ninety-five thousand, five hundred sixty-nine".