74423220768 has 384 divisors, whose sum is σ = 240622018560. Its totient is φ = 22234383360.

The previous prime is 74423220737. The next prime is 74423220791. The reversal of 74423220768 is 86702232447.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 107703303 + ... + 107703993.

It is an arithmetic number, because the mean of its divisors is an integer number (626619840).

Almost surely, 2^74423220768 is an apocalyptic number.

74423220768 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74423220768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120311009280).

74423220768 is an abundant number, since it is smaller than the sum of its proper divisors (166198797792).

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

74423220768 is a wasteful number, since it uses less digits than its factorization.

74423220768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 975 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The spelling of 74423220768 in words is "seventy-four billion, four hundred twenty-three million, two hundred twenty thousand, seven hundred sixty-eight".