72723702879 has 16 divisors (see below), whose sum is σ = 109102604800. Its totient is φ = 47868765048.

The previous prime is 72723702851. The next prime is 72723702899. The reversal of 72723702879 is 97820732727.

It is a happy number.

It is not a de Polignac number, because 72723702879 - 2¹¹ = 72723700831 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 (72723702899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17045149 + ... + 17049414.

It is an arithmetic number, because the mean of its divisors is an integer number (6818912800).

Almost surely, 2^72723702879 is an apocalyptic number.

72723702879 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

72723702879 is a deficient number, since it is larger than the sum of its proper divisors (36378901921).

72723702879 is a wasteful number, since it uses less digits than its factorization.

72723702879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34094651 (or 34094645 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The spelling of 72723702879 in words is "seventy-two billion, seven hundred twenty-three million, seven hundred two thousand, eight hundred seventy-nine".