72263071493 has 4 divisors (see below), whose sum is σ = 72748058700. Its totient is φ = 71778084288.

The previous prime is 72263071471. The next prime is 72263071511. The reversal of 72263071493 is 39417036227.

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 44807575684 + 27455495809 = 211678^2 + 165697^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72263071493 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 (72263071193) 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, 242493380 + ... + 242493677.

It is an arithmetic number, because the mean of its divisors is an integer number (18187014675).

Almost surely, 2^72263071493 is an apocalyptic number.

It is an amenable number.

72263071493 is a deficient number, since it is larger than the sum of its proper divisors (484987207).

72263071493 is a wasteful number, since it uses less digits than its factorization.

72263071493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484987206.

The product of its (nonzero) digits is 381024, while the sum is 44.

The spelling of 72263071493 in words is "seventy-two billion, two hundred sixty-three million, seventy-one thousand, four hundred ninety-three".