72591998567 has 8 divisors (see below), whose sum is σ = 79237306512. Its totient is φ = 65954363200.

The previous prime is 72591998539. The next prime is 72591998569. The reversal of 72591998567 is 76589919527.

It is a happy number.

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

It is not a de Polignac number, because 72591998567 - 2²⁴ = 72575221351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72591998497 and 72591998506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72591998569) 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, 1898348 + ... + 1936209.

It is an arithmetic number, because the mean of its divisors is an integer number (9904663314).

Almost surely, 2^72591998567 is an apocalyptic number.

72591998567 is a deficient number, since it is larger than the sum of its proper divisors (6645307945).

72591998567 is a wasteful number, since it uses less digits than its factorization.

72591998567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3836289.

The product of its digits is 85730400, while the sum is 68.

The spelling of 72591998567 in words is "seventy-two billion, five hundred ninety-one million, nine hundred ninety-eight thousand, five hundred sixty-seven".