72171422303 has 2 divisors, whose sum is σ = 72171422304. Its totient is φ = 72171422302.

The previous prime is 72171422299. The next prime is 72171422317. The reversal of 72171422303 is 30322417127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72171422303 - 2² = 72171422299 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72171422303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72171422383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36085711151 + 36085711152.

It is an arithmetic number, because the mean of its divisors is an integer number (36085711152).

Almost surely, 2^72171422303 is an apocalyptic number.

72171422303 is a deficient number, since it is larger than the sum of its proper divisors (1).

72171422303 is an equidigital number, since it uses as much as digits as its factorization.

72171422303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 32.

The spelling of 72171422303 in words is "seventy-two billion, one hundred seventy-one million, four hundred twenty-two thousand, three hundred three".