72725296973 has 8 divisors (see below), whose sum is σ = 83117517120. Its totient is φ = 62333799840.

The previous prime is 72725296967. The next prime is 72725296981. The reversal of 72725296973 is 37969252727.

It is a happy number.

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 72725296973 - 2⁸ = 72725296717 is a prime.

It is a super-2 number, since 2×72725296973² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72725296373) 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, 55358 + ... + 385376.

It is an arithmetic number, because the mean of its divisors is an integer number (10389689640).

Almost surely, 2^72725296973 is an apocalyptic number.

It is an amenable number.

72725296973 is a deficient number, since it is larger than the sum of its proper divisors (10392220147).

72725296973 is a wasteful number, since it uses less digits than its factorization.

72725296973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361507.

The product of its digits is 20003760, while the sum is 59.

The spelling of 72725296973 in words is "seventy-two billion, seven hundred twenty-five million, two hundred ninety-six thousand, nine hundred seventy-three".