74423156808 has 256 divisors, whose sum is σ = 258428620800. Its totient is φ = 17228252160.

The previous prime is 74423156803. The next prime is 74423156833. The reversal of 74423156808 is 80865132447.

It is not an unprimeable number, because it can be changed into a prime (74423156803) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 643285 + ... + 750107.

It is an arithmetic number, because the mean of its divisors is an integer number (1009486800).

Almost surely, 2^74423156808 is an apocalyptic number.

74423156808 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 74423156808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129214310400).

74423156808 is an abundant number, since it is smaller than the sum of its proper divisors (184005463992).

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

74423156808 is a wasteful number, since it uses less digits than its factorization.

74423156808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106892 (or 106888 counting only the distinct ones).

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 74423156808 in words is "seventy-four billion, four hundred twenty-three million, one hundred fifty-six thousand, eight hundred eight".