83905194680 has 64 divisors (see below), whose sum is σ = 191753079840. Its totient is φ = 33037650432.

The previous prime is 83905194677. The next prime is 83905194731. The reversal of 83905194680 is 8649150938.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874022 + ... + 965258.

Almost surely, 2^83905194680 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83905194680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95876539920).

83905194680 is an abundant number, since it is smaller than the sum of its proper divisors (107847885160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83905194680 is a wasteful number, since it uses less digits than its factorization.

83905194680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91608 (or 91604 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 83905194680 in words is "eighty-three billion, nine hundred five million, one hundred ninety-four thousand, six hundred eighty".