74330216640 has 168 divisors, whose sum is σ = 257505677520. Its totient is φ = 19678685184.

The previous prime is 74330216579. The next prime is 74330216659. The reversal of 74330216640 is 4661203347.

It is a happy number.

74330216640 is a `hidden beast` number, since 7 + 4 + 3 + 3 + 0 + 2 + 1 + 6 + 640 = 666.

It is a super-2 number, since 2×74330216640² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 74330216595 and 74330216604.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 307482 + ... + 493158.

It is an arithmetic number, because the mean of its divisors is an integer number (1532771890).

Almost surely, 2^74330216640 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 74330216640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128752838760).

74330216640 is an abundant number, since it is smaller than the sum of its proper divisors (183175460880).

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

74330216640 is a wasteful number, since it uses less digits than its factorization.

74330216640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185839 (or 185826 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

Adding to 74330216640 its reverse (4661203347), we get a palindrome (78991419987).

The spelling of 74330216640 in words is "seventy-four billion, three hundred thirty million, two hundred sixteen thousand, six hundred forty".