72380555620 has 12 divisors (see below), whose sum is σ = 151999166844. Its totient is φ = 28952222240.

The previous prime is 72380555603. The next prime is 72380555627. The reversal of 72380555620 is 2655508327.

It can be written as a sum of positive squares in 2 ways, for example, as 15366577444 + 57013978176 = 123962^2 + 238776^2 .

It is not an unprimeable number, because it can be changed into a prime (72380555627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1809513871 + ... + 1809513910.

It is an arithmetic number, because the mean of its divisors is an integer number (12666597237).

Almost surely, 2^72380555620 is an apocalyptic number.

It is an amenable number.

72380555620 is an abundant number, since it is smaller than the sum of its proper divisors (79618611224).

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

72380555620 is a wasteful number, since it uses less digits than its factorization.

72380555620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3619027790 (or 3619027788 counting only the distinct ones).

The product of its (nonzero) digits is 504000, while the sum is 43.

The spelling of 72380555620 in words is "seventy-two billion, three hundred eighty million, five hundred fifty-five thousand, six hundred twenty".