72226124731 has 2 divisors, whose sum is σ = 72226124732. Its totient is φ = 72226124730.

The previous prime is 72226124701. The next prime is 72226124779. The reversal of 72226124731 is 13742162227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72226124731 - 2¹³ = 72226116539 is a prime.

It is a super-2 number, since 2×72226124731² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72226124701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36113062365 + 36113062366.

It is an arithmetic number, because the mean of its divisors is an integer number (36113062366).

Almost surely, 2^72226124731 is an apocalyptic number.

72226124731 is a deficient number, since it is larger than the sum of its proper divisors (1).

72226124731 is an equidigital number, since it uses as much as digits as its factorization.

72226124731 is an odious number, because the sum of its binary digits is odd.

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

Adding to 72226124731 its reverse (13742162227), we get a palindrome (85968286958).

The spelling of 72226124731 in words is "seventy-two billion, two hundred twenty-six million, one hundred twenty-four thousand, seven hundred thirty-one".