73920909456 has 135 divisors (see below), whose sum is σ = 209661117939. Its totient is φ = 24312954816.

The previous prime is 73920909443. The next prime is 73920909581. The reversal of 73920909456 is 65490902937.

The square root of 73920909456 is 271884.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 453502431 + ... + 453502593.

Almost surely, 2^73920909456 is an apocalyptic number.

73920909456 is the 271884-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73920909456

73920909456 is an abundant number, since it is smaller than the sum of its proper divisors (135740208483).

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

73920909456 is a wasteful number, since it uses less digits than its factorization.

73920909456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 3674160, while the sum is 54.

The spelling of 73920909456 in words is "seventy-three billion, nine hundred twenty million, nine hundred nine thousand, four hundred fifty-six".