72549672399 has 24 divisors (see below), whose sum is σ = 106188919200. Its totient is φ = 47725590528.

The previous prime is 72549672367. The next prime is 72549672407. The reversal of 72549672399 is 99327694527.

72549672399 is a `hidden beast` number, since 7 + 2 + 549 + 67 + 23 + 9 + 9 = 666.

It is not a de Polignac number, because 72549672399 - 2⁵ = 72549672367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72549672359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170902 + ... + 417500.

It is an arithmetic number, because the mean of its divisors is an integer number (4424538300).

Almost surely, 2^72549672399 is an apocalyptic number.

72549672399 is a deficient number, since it is larger than the sum of its proper divisors (33639246801).

72549672399 is a wasteful number, since it uses less digits than its factorization.

72549672399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247039 (or 247036 counting only the distinct ones).

The product of its digits is 51438240, while the sum is 63.

The spelling of 72549672399 in words is "seventy-two billion, five hundred forty-nine million, six hundred seventy-two thousand, three hundred ninety-nine".