74542317528 has 192 divisors, whose sum is σ = 220813966080. Its totient is φ = 20541185280.

The previous prime is 74542317491. The next prime is 74542317541. The reversal of 74542317528 is 82571324547.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64094275 + ... + 64095437.

It is an arithmetic number, because the mean of its divisors is an integer number (1150072740).

Almost surely, 2^74542317528 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 74542317528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110406983040).

74542317528 is an abundant number, since it is smaller than the sum of its proper divisors (146271648552).

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

74542317528 is a wasteful number, since it uses less digits than its factorization.

74542317528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638 (or 1603 counting only the distinct ones).

The product of its digits is 1881600, while the sum is 48.

The spelling of 74542317528 in words is "seventy-four billion, five hundred forty-two million, three hundred seventeen thousand, five hundred twenty-eight".