168277190399873 has 2 divisors, whose sum is σ = 168277190399874. Its totient is φ = 168277190399872.

The previous prime is 168277190399837. The next prime is 168277190399897. The reversal of 168277190399873 is 378993091772861.

Together with previous prime (168277190399837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140457293755024 + 27819896644849 = 11851468^2 + 5274457^2 .

It is a cyclic number.

It is not a de Polignac number, because 168277190399873 - 2³⁶ = 168208470923137 is a prime.

It is a super-2 number, since 2×168277190399873² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (168277190396873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84138595199936 + 84138595199937.

It is an arithmetic number, because the mean of its divisors is an integer number (84138595199937).

Almost surely, 2^{168277190399873} is an apocalyptic number.

It is an amenable number.

168277190399873 is a deficient number, since it is larger than the sum of its proper divisors (1).

168277190399873 is an equidigital number, since it uses as much as digits as its factorization.

168277190399873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728324864, while the sum is 80.

The spelling of 168277190399873 in words is "one hundred sixty-eight trillion, two hundred seventy-seven billion, one hundred ninety million, three hundred ninety-nine thousand, eight hundred seventy-three".