72980765809 has 8 divisors (see below), whose sum is σ = 83525577408. Its totient is φ = 62465701200.

The previous prime is 72980765801. The next prime is 72980765947. The reversal of 72980765809 is 90856708927.

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

It is not a de Polignac number, because 72980765809 - 2³ = 72980765801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72980765801) 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, 7431487 + ... + 7441300.

It is an arithmetic number, because the mean of its divisors is an integer number (10440697176).

Almost surely, 2^72980765809 is an apocalyptic number.

It is an amenable number.

72980765809 is a deficient number, since it is larger than the sum of its proper divisors (10544811599).

72980765809 is a wasteful number, since it uses less digits than its factorization.

72980765809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14873495.

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 72980765809 in words is "seventy-two billion, nine hundred eighty million, seven hundred sixty-five thousand, eight hundred nine".