60721161169 has 2 divisors, whose sum is σ = 60721161170. Its totient is φ = 60721161168.

The previous prime is 60721161121. The next prime is 60721161209. The reversal of 60721161169 is 96116112706.

It is an a-pointer prime, because the next prime (60721161209) can be obtained adding 60721161169 to its sum of digits (40).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54912892225 + 5808268944 = 234335^2 + 76212^2 .

It is a cyclic number.

It is not a de Polignac number, because 60721161169 - 2⁷ = 60721161041 is a prime.

It is a super-2 number, since 2×60721161169² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (60721164169) 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, 30360580584 + 30360580585.

It is an arithmetic number, because the mean of its divisors is an integer number (30360580585).

Almost surely, 2^60721161169 is an apocalyptic number.

It is an amenable number.

60721161169 is a deficient number, since it is larger than the sum of its proper divisors (1).

60721161169 is an equidigital number, since it uses as much as digits as its factorization.

60721161169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 40.

The spelling of 60721161169 in words is "sixty billion, seven hundred twenty-one million, one hundred sixty-one thousand, one hundred sixty-nine".