65317863021 has 8 divisors (see below), whose sum is σ = 87092613504. Its totient is φ = 43544177280.

The previous prime is 65317863011. The next prime is 65317863043. The reversal of 65317863021 is 12036871356.

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

It is not a de Polignac number, because 65317863021 - 2¹¹ = 65317860973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65317863011) 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, 109941 + ... + 377786.

It is an arithmetic number, because the mean of its divisors is an integer number (10886576688).

Almost surely, 2^65317863021 is an apocalyptic number.

It is an amenable number.

65317863021 is a deficient number, since it is larger than the sum of its proper divisors (21774750483).

65317863021 is a wasteful number, since it uses less digits than its factorization.

65317863021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532371.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 65317863021 in words is "sixty-five billion, three hundred seventeen million, eight hundred sixty-three thousand, twenty-one".