72400352122271 has 2 divisors, whose sum is σ = 72400352122272. Its totient is φ = 72400352122270.

The previous prime is 72400352122253. The next prime is 72400352122309. The reversal of 72400352122271 is 17222125300427.

It is an a-pointer prime, because the next prime (72400352122309) can be obtained adding 72400352122271 to its sum of digits (38).

It is a weak prime.

It is an emirp because it is prime and its reverse (17222125300427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72400352122271 - 2¹⁸ = 72400351860127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72400352182271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36200176061135 + 36200176061136.

It is an arithmetic number, because the mean of its divisors is an integer number (36200176061136).

Almost surely, 2^{72400352122271} is an apocalyptic number.

72400352122271 is a deficient number, since it is larger than the sum of its proper divisors (1).

72400352122271 is an equidigital number, since it uses as much as digits as its factorization.

72400352122271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 38.

Adding to 72400352122271 its reverse (17222125300427), we get a palindrome (89622477422698).

The spelling of 72400352122271 in words is "seventy-two trillion, four hundred billion, three hundred fifty-two million, one hundred twenty-two thousand, two hundred seventy-one".