65561116575 has 12 divisors (see below), whose sum is σ = 108394379528. Its totient is φ = 34965928800.

The previous prime is 65561116571. The next prime is 65561116589. The reversal of 65561116575 is 57561116556.

It is not a de Polignac number, because 65561116575 - 2² = 65561116571 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65561116571) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 437074036 + ... + 437074185.

Almost surely, 2^65561116575 is an apocalyptic number.

65561116575 is a deficient number, since it is larger than the sum of its proper divisors (42833262953).

65561116575 is a wasteful number, since it uses less digits than its factorization.

65561116575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874148234 (or 874148229 counting only the distinct ones).

The product of its digits is 945000, while the sum is 48.

The spelling of 65561116575 in words is "sixty-five billion, five hundred sixty-one million, one hundred sixteen thousand, five hundred seventy-five".