83971021603 has 16 divisors (see below), whose sum is σ = 101776768704. Its totient is φ = 67631477760.

The previous prime is 83971021579. The next prime is 83971021619. The reversal of 83971021603 is 30612017938.

It is not a de Polignac number, because 83971021603 - 2⁵ = 83971021571 is a prime.

It is a super-2 number, since 2×83971021603² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83971021643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 498408 + ... + 645253.

It is an arithmetic number, because the mean of its divisors is an integer number (6361048044).

Almost surely, 2^83971021603 is an apocalyptic number.

83971021603 is a deficient number, since it is larger than the sum of its proper divisors (17805747101).

83971021603 is a wasteful number, since it uses less digits than its factorization.

83971021603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144302.

The product of its (nonzero) digits is 54432, while the sum is 40.

The spelling of 83971021603 in words is "eighty-three billion, nine hundred seventy-one million, twenty-one thousand, six hundred three".