83543820903 has 8 divisors (see below), whose sum is σ = 123768623600. Its totient is φ = 55695880584.

The previous prime is 83543820889. The next prime is 83543820907. The reversal of 83543820903 is 30902834538.

83543820903 is a `hidden beast` number, since 8 + 3 + 5 + 438 + 209 + 0 + 3 = 666.

It is not a de Polignac number, because 83543820903 - 2²⁸ = 83275385447 is a prime.

It is a super-2 number, since 2×83543820903² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83543820907) 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, 1547107768 + ... + 1547107821.

It is an arithmetic number, because the mean of its divisors is an integer number (15471077950).

Almost surely, 2^83543820903 is an apocalyptic number.

83543820903 is a deficient number, since it is larger than the sum of its proper divisors (40224802697).

83543820903 is a wasteful number, since it uses less digits than its factorization.

83543820903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094215598 (or 3094215592 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 83543820903 in words is "eighty-three billion, five hundred forty-three million, eight hundred twenty thousand, nine hundred three".