72215756452 has 48 divisors (see below), whose sum is σ = 147608697600. Its totient is φ = 30901394496.

The previous prime is 72215756443. The next prime is 72215756519. The reversal of 72215756452 is 25465751227.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 847008 + ... + 928360.

It is an arithmetic number, because the mean of its divisors is an integer number (3075181200).

Almost surely, 2^72215756452 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 72215756452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73804348800).

72215756452 is an abundant number, since it is smaller than the sum of its proper divisors (75392941148).

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

72215756452 is a wasteful number, since it uses less digits than its factorization.

72215756452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82025 (or 82009 counting only the distinct ones).

The product of its digits is 1176000, while the sum is 46.

The spelling of 72215756452 in words is "seventy-two billion, two hundred fifteen million, seven hundred fifty-six thousand, four hundred fifty-two".