74980189728 has 48 divisors (see below), whose sum is σ = 218692222560. Its totient is φ = 24993396288.

The previous prime is 74980189723. The next prime is 74980189787. The reversal of 74980189728 is 82798108947.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (74980189723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43390450 + ... + 43392177.

It is an arithmetic number, because the mean of its divisors is an integer number (4556087970).

Almost surely, 2^74980189728 is an apocalyptic number.

It is an amenable number.

74980189728 is an abundant number, since it is smaller than the sum of its proper divisors (143712032832).

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

74980189728 is a wasteful number, since it uses less digits than its factorization.

74980189728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86782646 (or 86782632 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 63.

The spelling of 74980189728 in words is "seventy-four billion, nine hundred eighty million, one hundred eighty-nine thousand, seven hundred twenty-eight".