83856992730 has 96 divisors (see below), whose sum is σ = 234431051904. Its totient is φ = 18805532928.

The previous prime is 83856992729. The next prime is 83856992749. The reversal of 83856992730 is 3729965838.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 518812 + ... + 660968.

It is an arithmetic number, because the mean of its divisors is an integer number (2441990124).

Almost surely, 2^83856992730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83856992730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117215525952).

83856992730 is an abundant number, since it is smaller than the sum of its proper divisors (150574059174).

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

83856992730 is a wasteful number, since it uses less digits than its factorization.

83856992730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142280 (or 142227 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 60.

The spelling of 83856992730 in words is "eighty-three billion, eight hundred fifty-six million, nine hundred ninety-two thousand, seven hundred thirty".