72488479921 has 8 divisors (see below), whose sum is σ = 85161291264. Its totient is φ = 60829493520.

The previous prime is 72488479909. The next prime is 72488479951. The reversal of 72488479921 is 12997488427.

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 72488479921 - 2⁹ = 72488479409 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 72488479921.

It is not an unprimeable number, because it can be changed into a prime (72488479951) 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, 253456081 + ... + 253456366.

It is an arithmetic number, because the mean of its divisors is an integer number (10645161408).

Almost surely, 2^72488479921 is an apocalyptic number.

It is an amenable number.

72488479921 is a deficient number, since it is larger than the sum of its proper divisors (12672811343).

72488479921 is a wasteful number, since it uses less digits than its factorization.

72488479921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506912471.

The product of its digits is 16257024, while the sum is 61.

The spelling of 72488479921 in words is "seventy-two billion, four hundred eighty-eight million, four hundred seventy-nine thousand, nine hundred twenty-one".