73280949504 has 144 divisors (see below), whose sum is σ = 228080573952. Its totient is φ = 20450433024.

The previous prime is 73280949503. The next prime is 73280949551. The reversal of 73280949504 is 40594908237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73280949503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72667 + ... + 389669.

Almost surely, 2^73280949504 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 73280949504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114040286976).

73280949504 is an abundant number, since it is smaller than the sum of its proper divisors (154799624448).

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

73280949504 is a wasteful number, since it uses less digits than its factorization.

73280949504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317072 (or 317058 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 73280949504 in words is "seventy-three billion, two hundred eighty million, nine hundred forty-nine thousand, five hundred four".