83330620720 has 80 divisors (see below), whose sum is σ = 200856296160. Its totient is φ = 32113528832.

The previous prime is 83330620687. The next prime is 83330620721. The reversal of 83330620720 is 2702603338.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (83330620721) 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, 1044984 + ... + 1121896.

It is an arithmetic number, because the mean of its divisors is an integer number (2510703702).

Almost surely, 2^83330620720 is an apocalyptic number.

83330620720 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83330620720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100428148080).

83330620720 is an abundant number, since it is smaller than the sum of its proper divisors (117525675440).

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

83330620720 is a wasteful number, since it uses less digits than its factorization.

83330620720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77422 (or 77416 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 34.

The spelling of 83330620720 in words is "eighty-three billion, three hundred thirty million, six hundred twenty thousand, seven hundred twenty".