72236295293 has 4 divisors (see below), whose sum is σ = 75377003808. Its totient is φ = 69095586780.

The previous prime is 72236295289. The next prime is 72236295311. The reversal of 72236295293 is 39259263227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72236295293 - 2² = 72236295289 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 (72236295283) 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, 1570354223 + ... + 1570354268.

It is an arithmetic number, because the mean of its divisors is an integer number (18844250952).

Almost surely, 2^72236295293 is an apocalyptic number.

It is an amenable number.

72236295293 is a deficient number, since it is larger than the sum of its proper divisors (3140708515).

72236295293 is a wasteful number, since it uses less digits than its factorization.

72236295293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3140708514.

The product of its digits is 2449440, while the sum is 50.

The spelling of 72236295293 in words is "seventy-two billion, two hundred thirty-six million, two hundred ninety-five thousand, two hundred ninety-three".