72566783999 has 8 divisors (see below), whose sum is σ = 76407914880. Its totient is φ = 68727835800.

The previous prime is 72566783987. The next prime is 72566784109. The reversal of 72566783999 is 99938766527.

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 72566783999 - 2³² = 68271816703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72566783699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477197 + ... + 610614.

It is an arithmetic number, because the mean of its divisors is an integer number (9550989360).

Almost surely, 2^72566783999 is an apocalyptic number.

72566783999 is a deficient number, since it is larger than the sum of its proper divisors (3841130881).

72566783999 is a wasteful number, since it uses less digits than its factorization.

72566783999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091341.

The product of its digits is 308629440, while the sum is 71.

The spelling of 72566783999 in words is "seventy-two billion, five hundred sixty-six million, seven hundred eighty-three thousand, nine hundred ninety-nine".