74530989632 has 84 divisors (see below), whose sum is σ = 167809517568. Its totient is φ = 32784787200.

The previous prime is 74530989619. The next prime is 74530989641. The reversal of 74530989632 is 23698903547.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84833 + ... + 395295.

It is an arithmetic number, because the mean of its divisors is an integer number (1997732352).

Almost surely, 2^74530989632 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 74530989632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83904758784).

74530989632 is an abundant number, since it is smaller than the sum of its proper divisors (93278527936).

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

74530989632 is a wasteful number, since it uses less digits than its factorization.

74530989632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310528 (or 310507 counting only the distinct ones).

The product of its (nonzero) digits is 9797760, while the sum is 56.

The spelling of 74530989632 in words is "seventy-four billion, five hundred thirty million, nine hundred eighty-nine thousand, six hundred thirty-two".