65320803831 has 4 divisors (see below), whose sum is σ = 87094405112. Its totient is φ = 43547202552.

The previous prime is 65320803803. The next prime is 65320803881. The reversal of 65320803831 is 13830802356.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 65320803831 - 2¹¹ = 65320801783 is a prime.

It is a super-2 number, since 2×65320803831² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 65320803831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65320803881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10886800636 + ... + 10886800641.

It is an arithmetic number, because the mean of its divisors is an integer number (21773601278).

Almost surely, 2^65320803831 is an apocalyptic number.

65320803831 is a deficient number, since it is larger than the sum of its proper divisors (21773601281).

65320803831 is a wasteful number, since it uses less digits than its factorization.

65320803831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21773601280.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 65320803831 in words is "sixty-five billion, three hundred twenty million, eight hundred three thousand, eight hundred thirty-one".