65403712085 has 8 divisors (see below), whose sum is σ = 78487986336. Its totient is φ = 52320615120.

The previous prime is 65403712039. The next prime is 65403712097. The reversal of 65403712085 is 58021730456.

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

It is not a de Polignac number, because 65403712085 - 2⁸ = 65403711829 is a prime.

It is a Duffinian number.

It is a congruent 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, 167099 + ... + 398408.

It is an arithmetic number, because the mean of its divisors is an integer number (9810998292).

Almost surely, 2^65403712085 is an apocalyptic number.

It is an amenable number.

65403712085 is a deficient number, since it is larger than the sum of its proper divisors (13084274251).

65403712085 is a wasteful number, since it uses less digits than its factorization.

65403712085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588643.

The product of its (nonzero) digits is 201600, while the sum is 41.

It can be divided in two parts, 6540371 and 2085, that added together give a palindrome (6542456).

The spelling of 65403712085 in words is "sixty-five billion, four hundred three million, seven hundred twelve thousand, eighty-five".