72723452672 has 108 divisors (see below), whose sum is σ = 157487861664. Its totient is φ = 33500712960.

The previous prime is 72723452663. The next prime is 72723452693. The reversal of 72723452672 is 27625432727.

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 11 ways as a sum of consecutive naturals, for example, 28596233 + ... + 28598775.

Almost surely, 2^72723452672 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 72723452672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78743930832).

72723452672 is an abundant number, since it is smaller than the sum of its proper divisors (84764408992).

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

72723452672 is a wasteful number, since it uses less digits than its factorization.

72723452672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246 (or 3219 counting only the distinct ones).

The product of its digits is 1975680, while the sum is 47.

The spelling of 72723452672 in words is "seventy-two billion, seven hundred twenty-three million, four hundred fifty-two thousand, six hundred seventy-two".