73165278480 has 320 divisors, whose sum is σ = 264511070208. Its totient is φ = 16384757760.

The previous prime is 73165278391. The next prime is 73165278481. The reversal of 73165278480 is 8487256137.

It is a super-2 number, since 2×73165278480² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73165278481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19917924 + ... + 19921596.

Almost surely, 2^73165278480 is an apocalyptic number.

73165278480 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73165278480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132255535104).

73165278480 is an abundant number, since it is smaller than the sum of its proper divisors (191345791728).

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

73165278480 is a wasteful number, since it uses less digits than its factorization.

73165278480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934 (or 3928 counting only the distinct ones).

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 73165278480 in words is "seventy-three billion, one hundred sixty-five million, two hundred seventy-eight thousand, four hundred eighty".