65973207985 has 8 divisors (see below), whose sum is σ = 79169740416. Its totient is φ = 52777305840.

The previous prime is 65973207947. The next prime is 65973208013. The reversal of 65973207985 is 58970237956.

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

It is not a de Polignac number, because 65973207985 - 2²¹ = 65971110833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115842 + ... + 381268.

It is an arithmetic number, because the mean of its divisors is an integer number (9896217552).

Almost surely, 2^65973207985 is an apocalyptic number.

It is an amenable number.

65973207985 is a deficient number, since it is larger than the sum of its proper divisors (13196532431).

65973207985 is a wasteful number, since it uses less digits than its factorization.

65973207985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315143.

The product of its (nonzero) digits is 28576800, while the sum is 61.

The spelling of 65973207985 in words is "sixty-five billion, nine hundred seventy-three million, two hundred seven thousand, nine hundred eighty-five".