72180625747 has 8 divisors (see below), whose sum is σ = 75336246720. Its totient is φ = 69091439040.

The previous prime is 72180625723. The next prime is 72180625787. The reversal of 72180625747 is 74752608127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72180625747 - 2²⁷ = 72046408019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 72180625747.

It is not an unprimeable number, because it can be changed into a prime (72180625717) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16606347 + ... + 16610692.

It is an arithmetic number, because the mean of its divisors is an integer number (9417030840).

Almost surely, 2^72180625747 is an apocalyptic number.

72180625747 is a deficient number, since it is larger than the sum of its proper divisors (3155620973).

72180625747 is a wasteful number, since it uses less digits than its factorization.

72180625747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33217133.

The product of its (nonzero) digits is 1317120, while the sum is 49.

The spelling of 72180625747 in words is "seventy-two billion, one hundred eighty million, six hundred twenty-five thousand, seven hundred forty-seven".