83919547880 has 128 divisors (see below), whose sum is σ = 218078542080. Its totient is φ = 28468377600.

The previous prime is 83919547867. The next prime is 83919547883. The reversal of 83919547880 is 8874591938.

It is a super-2 number, since 2×83919547880² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83919547883) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38976884 + ... + 38979036.

It is an arithmetic number, because the mean of its divisors is an integer number (1703738610).

Almost surely, 2^83919547880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83919547880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109039271040).

83919547880 is an abundant number, since it is smaller than the sum of its proper divisors (134158994200).

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

83919547880 is a wasteful number, since it uses less digits than its factorization.

83919547880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579 (or 3575 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 62.

The spelling of 83919547880 in words is "eighty-three billion, nine hundred nineteen million, five hundred forty-seven thousand, eight hundred eighty".