83668851999 has 12 divisors (see below), whose sum is σ = 120857565400. Its totient is φ = 55778054544.

The previous prime is 83668851997. The next prime is 83668852039. The reversal of 83668851999 is 99915886638.

It is not a de Polignac number, because 83668851999 - 2¹ = 83668851997 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 (83668851997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 651957 + ... + 769665.

Almost surely, 2^83668851999 is an apocalyptic number.

83668851999 is a deficient number, since it is larger than the sum of its proper divisors (37188713401).

83668851999 is a wasteful number, since it uses less digits than its factorization.

83668851999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196694 (or 196691 counting only the distinct ones).

The product of its digits is 201553920, while the sum is 72.

The spelling of 83668851999 in words is "eighty-three billion, six hundred sixty-eight million, eight hundred fifty-one thousand, nine hundred ninety-nine".