65542575217 has 8 divisors (see below), whose sum is σ = 79312023936. Its totient is φ = 52874682432.

The previous prime is 65542575211. The next prime is 65542575221. The reversal of 65542575217 is 71257524556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65542575217 - 2⁷ = 65542575089 is a prime.

It is a super-2 number, since 2×65542575217² (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 (65542575211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275388853 + ... + 275389090.

It is an arithmetic number, because the mean of its divisors is an integer number (9914002992).

Almost surely, 2^65542575217 is an apocalyptic number.

It is an amenable number.

65542575217 is a deficient number, since it is larger than the sum of its proper divisors (13769448719).

65542575217 is a wasteful number, since it uses less digits than its factorization.

65542575217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550777967.

The product of its digits is 2940000, while the sum is 49.

The spelling of 65542575217 in words is "sixty-five billion, five hundred forty-two million, five hundred seventy-five thousand, two hundred seventeen".