74830308648 has 128 divisors (see below), whose sum is σ = 195595171200. Its totient is φ = 23835442176.

The previous prime is 74830308647. The next prime is 74830308661. The reversal of 74830308648 is 84680303847.

It is a self number, because there is not a number n which added to its sum of digits gives 74830308648.

It is not an unprimeable number, because it can be changed into a prime (74830308647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21274986 + ... + 21278502.

It is an arithmetic number, because the mean of its divisors is an integer number (1528087275).

Almost surely, 2^74830308648 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 74830308648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97797585600).

74830308648 is an abundant number, since it is smaller than the sum of its proper divisors (120764862552).

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

74830308648 is a wasteful number, since it uses less digits than its factorization.

74830308648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011 (or 4007 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 51.

The spelling of 74830308648 in words is "seventy-four billion, eight hundred thirty million, three hundred eight thousand, six hundred forty-eight".