65475539569 has 16 divisors (see below), whose sum is σ = 72202761216. Its totient is φ = 58878576000.

The previous prime is 65475539557. The next prime is 65475539573. The reversal of 65475539569 is 96593557456.

It is a cyclic number.

It is not a de Polignac number, because 65475539569 - 2¹⁷ = 65475408497 is a prime.

It is a super-2 number, since 2×65475539569² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65475539569.

It is not an unprimeable number, because it can be changed into a prime (65475539509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1180549 + ... + 1234765.

It is an arithmetic number, because the mean of its divisors is an integer number (4512672576).

Almost surely, 2^65475539569 is an apocalyptic number.

It is an amenable number.

65475539569 is a deficient number, since it is larger than the sum of its proper divisors (6727221647).

65475539569 is a wasteful number, since it uses less digits than its factorization.

65475539569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55416.

The product of its digits is 153090000, while the sum is 64.

The spelling of 65475539569 in words is "sixty-five billion, four hundred seventy-five million, five hundred thirty-nine thousand, five hundred sixty-nine".