168703111525061 has 2 divisors, whose sum is σ = 168703111525062. Its totient is φ = 168703111525060.

The previous prime is 168703111525007. The next prime is 168703111525063. The reversal of 168703111525061 is 160525111307861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149167286120836 + 19535825404225 = 12213406^2 + 4419935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168703111525061 is a prime.

It is a Sophie Germain prime.

Together with 168703111525063, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 168703111524997 and 168703111525015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168703111525063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84351555762530 + 84351555762531.

It is an arithmetic number, because the mean of its divisors is an integer number (84351555762531).

Almost surely, 2^{168703111525061} is an apocalyptic number.

It is an amenable number.

168703111525061 is a deficient number, since it is larger than the sum of its proper divisors (1).

168703111525061 is an equidigital number, since it uses as much as digits as its factorization.

168703111525061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 47.

The spelling of 168703111525061 in words is "one hundred sixty-eight trillion, seven hundred three billion, one hundred eleven million, five hundred twenty-five thousand, sixty-one".