74505541728 has 72 divisors (see below), whose sum is σ = 198948988728. Its totient is φ = 24414135808.

The previous prime is 74505541723. The next prime is 74505541769. The reversal of 74505541728 is 82714550547.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74505541723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222700 + ... + 445652.

It is an arithmetic number, because the mean of its divisors is an integer number (2763180399).

Almost surely, 2^74505541728 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 74505541728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99474494364).

74505541728 is an abundant number, since it is smaller than the sum of its proper divisors (124443447000).

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

74505541728 is a wasteful number, since it uses less digits than its factorization.

74505541728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223084 (or 223017 counting only the distinct ones).

The product of its (nonzero) digits is 1568000, while the sum is 48.

The spelling of 74505541728 in words is "seventy-four billion, five hundred five million, five hundred forty-one thousand, seven hundred twenty-eight".