83940785317 has 8 divisors (see below), whose sum is σ = 84135340800. Its totient is φ = 83746311264.

The previous prime is 83940785287. The next prime is 83940785321. The reversal of 83940785317 is 71358704938.

It is a happy number.

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 83940785317 - 2³¹ = 81793301669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83940725317) 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, 2362518 + ... + 2397784.

It is an arithmetic number, because the mean of its divisors is an integer number (10516917600).

Almost surely, 2^83940785317 is an apocalyptic number.

It is an amenable number.

83940785317 is a deficient number, since it is larger than the sum of its proper divisors (194555483).

83940785317 is a wasteful number, since it uses less digits than its factorization.

83940785317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40715.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 83940785317 in words is "eighty-three billion, nine hundred forty million, seven hundred eighty-five thousand, three hundred seventeen".