107721078071928 has 128 divisors (see below), whose sum is σ = 277030575360000. Its totient is φ = 34884088954880.

The previous prime is 107721078071923. The next prime is 107721078071951. The reversal of 107721078071928 is 829170870127701.

107721078071928 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107721078071923) 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, 834212953 + ... + 834342071.

It is an arithmetic number, because the mean of its divisors is an integer number (2164301370000).

Almost surely, 2^{107721078071928} 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 107721078071928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138515287680000).

107721078071928 is an abundant number, since it is smaller than the sum of its proper divisors (169309497288072).

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

107721078071928 is a wasteful number, since it uses less digits than its factorization.

107721078071928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132725 (or 132721 counting only the distinct ones).

The product of its (nonzero) digits is 5531904, while the sum is 60.

The spelling of 107721078071928 in words is "one hundred seven trillion, seven hundred twenty-one billion, seventy-eight million, seventy-one thousand, nine hundred twenty-eight".