72206080169 has 2 divisors, whose sum is σ = 72206080170. Its totient is φ = 72206080168.

The previous prime is 72206080127. The next prime is 72206080189. The reversal of 72206080169 is 96108060227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71163565225 + 1042514944 = 266765^2 + 32288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72206080169 is a prime.

It is a super-2 number, since 2×72206080169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72206080189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36103040084 + 36103040085.

It is an arithmetic number, because the mean of its divisors is an integer number (36103040085).

Almost surely, 2^72206080169 is an apocalyptic number.

It is an amenable number.

72206080169 is a deficient number, since it is larger than the sum of its proper divisors (1).

72206080169 is an equidigital number, since it uses as much as digits as its factorization.

72206080169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 72206080169 in words is "seventy-two billion, two hundred six million, eighty thousand, one hundred sixty-nine".