65473047509 has 8 divisors (see below), whose sum is σ = 65562537600. Its totient is φ = 65383621200.

The previous prime is 65473047503. The next prime is 65473047533. The reversal of 65473047509 is 90574037456.

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 65473047509 - 2²⁴ = 65456270293 is a prime.

It is a super-2 number, since 2×65473047509² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65473047503) 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, 2253344 + ... + 2282214.

It is an arithmetic number, because the mean of its divisors is an integer number (8195317200).

Almost surely, 2^65473047509 is an apocalyptic number.

It is an amenable number.

65473047509 is a deficient number, since it is larger than the sum of its proper divisors (89490091).

65473047509 is a wasteful number, since it uses less digits than its factorization.

65473047509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31891.

The product of its (nonzero) digits is 3175200, while the sum is 50.

The spelling of 65473047509 in words is "sixty-five billion, four hundred seventy-three million, forty-seven thousand, five hundred nine".