83987837717 has 8 divisors (see below), whose sum is σ = 95988054912. Its totient is φ = 71988109200.

The previous prime is 83987837711. The next prime is 83987837729. The reversal of 83987837717 is 71773878938.

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

It is not a de Polignac number, because 83987837717 - 2³⁶ = 15268360981 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 (83987837711) 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, 388367 + ... + 564627.

It is an arithmetic number, because the mean of its divisors is an integer number (11998506864).

Almost surely, 2^83987837717 is an apocalyptic number.

It is an amenable number.

83987837717 is a deficient number, since it is larger than the sum of its proper divisors (12000217195).

83987837717 is a wasteful number, since it uses less digits than its factorization.

83987837717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244339.

The product of its digits is 99574272, while the sum is 68.

The spelling of 83987837717 in words is "eighty-three billion, nine hundred eighty-seven million, eight hundred thirty-seven thousand, seven hundred seventeen".