72226124713 has 4 divisors (see below), whose sum is σ = 72226663380. Its totient is φ = 72225586048.

The previous prime is 72226124701. The next prime is 72226124731. The reversal of 72226124713 is 31742162227.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 31742162227 = 31 ⋅1023940717.

It can be written as a sum of positive squares in 2 ways, for example, as 41240267929 + 30985856784 = 203077^2 + 176028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72226124713 is a prime.

It is a super-2 number, since 2×72226124713² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72226128713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108081 + ... + 395137.

It is an arithmetic number, because the mean of its divisors is an integer number (18056665845).

Almost surely, 2^72226124713 is an apocalyptic number.

It is an amenable number.

72226124713 is a deficient number, since it is larger than the sum of its proper divisors (538667).

72226124713 is a wasteful number, since it uses less digits than its factorization.

72226124713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538666.

The product of its digits is 56448, while the sum is 37.

The spelling of 72226124713 in words is "seventy-two billion, two hundred twenty-six million, one hundred twenty-four thousand, seven hundred thirteen".