83971021602 has 32 divisors (see below), whose sum is σ = 180911082240. Its totient is φ = 25830034560.

The previous prime is 83971021579. The next prime is 83971021619. The reversal of 83971021602 is 20612017938.

It is a super-2 number, since 2×83971021602² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134974 + ... + 431462.

It is an arithmetic number, because the mean of its divisors is an integer number (5653471320).

Almost surely, 2^83971021602 is an apocalyptic number.

83971021602 is an abundant number, since it is smaller than the sum of its proper divisors (96940060638).

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

83971021602 is a wasteful number, since it uses less digits than its factorization.

83971021602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300138.

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 83971021602 in words is "eighty-three billion, nine hundred seventy-one million, twenty-one thousand, six hundred two".