72174275715197 has 2 divisors, whose sum is σ = 72174275715198. Its totient is φ = 72174275715196.

The previous prime is 72174275715173. The next prime is 72174275715233. The reversal of 72174275715197 is 79151757247127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46849014593956 + 25325261121241 = 6844634^2 + 5032421^2 .

It is an emirp because it is prime and its reverse (79151757247127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72174275715197 - 2¹⁸ = 72174275453053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72174275715127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36087137857598 + 36087137857599.

It is an arithmetic number, because the mean of its divisors is an integer number (36087137857599).

Almost surely, 2^{72174275715197} is an apocalyptic number.

It is an amenable number.

72174275715197 is a deficient number, since it is larger than the sum of its proper divisors (1).

72174275715197 is an equidigital number, since it uses as much as digits as its factorization.

72174275715197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60505200, while the sum is 65.

The spelling of 72174275715197 in words is "seventy-two trillion, one hundred seventy-four billion, two hundred seventy-five million, seven hundred fifteen thousand, one hundred ninety-seven".