74318699520 has 528 divisors, whose sum is σ = 280399042560. Its totient is φ = 18091081728.

The previous prime is 74318699513. The next prime is 74318699531. The reversal of 74318699520 is 2599681347.

74318699520 is a `hidden beast` number, since 7 + 4 + 31 + 86 + 9 + 9 + 520 = 666.

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, 58106241 + ... + 58107519.

It is a 1-persistent number, because it is pandigital, but 2⋅74318699520 = 148637399040 is not.

Almost surely, 2^74318699520 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 74318699520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140199521280).

74318699520 is an abundant number, since it is smaller than the sum of its proper divisors (206080343040).

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

74318699520 is a wasteful number, since it uses less digits than its factorization.

74318699520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420 (or 1399 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 74318699520 in words is "seventy-four billion, three hundred eighteen million, six hundred ninety-nine thousand, five hundred twenty".