74055305820 has 96 divisors (see below), whose sum is σ = 219733432128. Its totient is φ = 18571087872.

The previous prime is 74055305791. The next prime is 74055305843. The reversal of 74055305820 is 2850355047.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1232394 + ... + 1291086.

It is an arithmetic number, because the mean of its divisors is an integer number (2288889918).

Almost surely, 2^74055305820 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 74055305820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109866716064).

74055305820 is an abundant number, since it is smaller than the sum of its proper divisors (145678126308).

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

74055305820 is a wasteful number, since it uses less digits than its factorization.

74055305820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59959 (or 59957 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 39.

The spelling of 74055305820 in words is "seventy-four billion, fifty-five million, three hundred five thousand, eight hundred twenty".