72705076799 has 4 divisors (see below), whose sum is σ = 72914601864. Its totient is φ = 72495551736.

The previous prime is 72705076711. The next prime is 72705076841. The reversal of 72705076799 is 99767050727.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72705076799 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 (72705076699) 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 3 ways as a sum of consecutive naturals, for example, 104762012 + ... + 104762705.

It is an arithmetic number, because the mean of its divisors is an integer number (18228650466).

Almost surely, 2^72705076799 is an apocalyptic number.

72705076799 is a deficient number, since it is larger than the sum of its proper divisors (209525065).

72705076799 is a wasteful number, since it uses less digits than its factorization.

72705076799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209525064.

The product of its (nonzero) digits is 11668860, while the sum is 59.

The spelling of 72705076799 in words is "seventy-two billion, seven hundred five million, seventy-six thousand, seven hundred ninety-nine".