168277190396873 has 2 divisors, whose sum is σ = 168277190396874. Its totient is φ = 168277190396872.

The previous prime is 168277190396869. The next prime is 168277190396921. The reversal of 168277190396873 is 378693091772861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165118722121609 + 3158468275264 = 12849853^2 + 1777208^2 .

It is a cyclic number.

It is not a de Polignac number, because 168277190396873 - 2² = 168277190396869 is a prime.

It is a super-3 number, since 3×168277190396873³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 168277190396794 and 168277190396803.

It is not a weakly prime, because it can be changed into another prime (168277190398873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84138595198436 + 84138595198437.

It is an arithmetic number, because the mean of its divisors is an integer number (84138595198437).

Almost surely, 2^{168277190396873} is an apocalyptic number.

It is an amenable number.

168277190396873 is a deficient number, since it is larger than the sum of its proper divisors (1).

168277190396873 is an equidigital number, since it uses as much as digits as its factorization.

168277190396873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152216576, while the sum is 77.

The spelling of 168277190396873 in words is "one hundred sixty-eight trillion, two hundred seventy-seven billion, one hundred ninety million, three hundred ninety-six thousand, eight hundred seventy-three".