72265708220 has 96 divisors (see below), whose sum is σ = 157991178240. Its totient is φ = 27746611200.

The previous prime is 72265708181. The next prime is 72265708231. The reversal of 72265708220 is 2280756227.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15049820 + ... + 15054620.

It is an arithmetic number, because the mean of its divisors is an integer number (1645741440).

Almost surely, 2^72265708220 is an apocalyptic number.

It is an amenable number.

72265708220 is an abundant number, since it is smaller than the sum of its proper divisors (85725470020).

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

72265708220 is a wasteful number, since it uses less digits than its factorization.

72265708220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5163 (or 5161 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 41.

The spelling of 72265708220 in words is "seventy-two billion, two hundred sixty-five million, seven hundred eight thousand, two hundred twenty".