83503421720 has 32 divisors (see below), whose sum is σ = 192252067920. Its totient is φ = 32624592000.

The previous prime is 83503421647. The next prime is 83503421723. The reversal of 83503421720 is 2712430538.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83503421723) 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, 24272531 + ... + 24275970.

Almost surely, 2^83503421720 is an apocalyptic number.

It is an amenable number.

83503421720 is an abundant number, since it is smaller than the sum of its proper divisors (108748646200).

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

83503421720 is a wasteful number, since it uses less digits than its factorization.

83503421720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48548555 (or 48548551 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The spelling of 83503421720 in words is "eighty-three billion, five hundred three million, four hundred twenty-one thousand, seven hundred twenty".