72332608320 has 672 divisors, whose sum is σ = 298130976000. Its totient is φ = 16078196736.

The previous prime is 72332608273. The next prime is 72332608333. The reversal of 72332608320 is 2380623327.

It is a happy number.

72332608320 is a `hidden beast` number, since 7 + 2 + 3 + 326 + 0 + 8 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-3 number, since 3×72332608320³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 36549091 + ... + 36551069.

Almost surely, 2^72332608320 is an apocalyptic number.

72332608320 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 72332608320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149065488000).

72332608320 is an abundant number, since it is smaller than the sum of its proper divisors (225798367680).

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

72332608320 is a wasteful number, since it uses less digits than its factorization.

72332608320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060 (or 2033 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 72332608320 in words is "seventy-two billion, three hundred thirty-two million, six hundred eight thousand, three hundred twenty".