74518418688 has 144 divisors (see below), whose sum is σ = 229766334336. Its totient is φ = 20999208960.

The previous prime is 74518418669. The next prime is 74518418693. The reversal of 74518418688 is 88681481547.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297508 + ... + 487388.

It is an arithmetic number, because the mean of its divisors is an integer number (1595599544).

Almost surely, 2^74518418688 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 74518418688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114883167168).

74518418688 is an abundant number, since it is smaller than the sum of its proper divisors (155247915648).

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

74518418688 is a wasteful number, since it uses less digits than its factorization.

74518418688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189980 (or 189966 counting only the distinct ones).

The product of its digits is 13762560, while the sum is 60.

The spelling of 74518418688 in words is "seventy-four billion, five hundred eighteen million, four hundred eighteen thousand, six hundred eighty-eight".