74045915520 has 256 divisors, whose sum is σ = 250227118080. Its totient is φ = 18591621120.

The previous prime is 74045915507. The next prime is 74045915527. The reversal of 74045915520 is 2551954047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74045915527) 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, 2185429 + ... + 2219051.

It is an arithmetic number, because the mean of its divisors is an integer number (977449680).

Almost surely, 2^74045915520 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 74045915520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125113559040).

74045915520 is an abundant number, since it is smaller than the sum of its proper divisors (176181202560).

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

74045915520 is a wasteful number, since it uses less digits than its factorization.

74045915520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33713 (or 33701 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 74045915520 in words is "seventy-four billion, forty-five million, nine hundred fifteen thousand, five hundred twenty".