83551439320 has 32 divisors (see below), whose sum is σ = 194054958720. Its totient is φ = 32342492160.

The previous prime is 83551439317. The next prime is 83551439339. The reversal of 83551439320 is 2393415538.

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, 33688857 + ... + 33691336.

It is an arithmetic number, because the mean of its divisors is an integer number (6064217460).

Almost surely, 2^83551439320 is an apocalyptic number.

It is an amenable number.

83551439320 is an abundant number, since it is smaller than the sum of its proper divisors (110503519400).

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

83551439320 is a wasteful number, since it uses less digits than its factorization.

83551439320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67380235 (or 67380231 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 83551439320 in words is "eighty-three billion, five hundred fifty-one million, four hundred thirty-nine thousand, three hundred twenty".