83609421020 has 24 divisors (see below), whose sum is σ = 179663036784. Its totient is φ = 32666006016.

The previous prime is 83609421001. The next prime is 83609421073. The reversal of 83609421020 is 2012490638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48609269 + ... + 48610988.

It is an arithmetic number, because the mean of its divisors is an integer number (7485959866).

Almost surely, 2^83609421020 is an apocalyptic number.

It is an amenable number.

83609421020 is an abundant number, since it is smaller than the sum of its proper divisors (96053615764).

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

83609421020 is a wasteful number, since it uses less digits than its factorization.

83609421020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97220309 (or 97220307 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 83609421020 in words is "eighty-three billion, six hundred nine million, four hundred twenty-one thousand, twenty".