72678584593 has 4 divisors (see below), whose sum is σ = 72961380900. Its totient is φ = 72395788288.

The previous prime is 72678584591. The next prime is 72678584599. The reversal of 72678584593 is 39548587627.

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

It can be written as a sum of positive squares in 2 ways, for example, as 56602119744 + 16076464849 = 237912^2 + 126793^2 .

It is a cyclic number.

It is not a de Polignac number, because 72678584593 - 2¹ = 72678584591 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72678584591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141397768 + ... + 141398281.

It is an arithmetic number, because the mean of its divisors is an integer number (18240345225).

Almost surely, 2^72678584593 is an apocalyptic number.

It is an amenable number.

72678584593 is a deficient number, since it is larger than the sum of its proper divisors (282796307).

72678584593 is a wasteful number, since it uses less digits than its factorization.

72678584593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282796306.

The product of its digits is 101606400, while the sum is 64.

The spelling of 72678584593 in words is "seventy-two billion, six hundred seventy-eight million, five hundred eighty-four thousand, five hundred ninety-three".