171612111079 has 2 divisors, whose sum is σ = 171612111080. Its totient is φ = 171612111078.

The previous prime is 171612111053. The next prime is 171612111149. The reversal of 171612111079 is 970111216171.

171612111079 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171612111079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171612111379) 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, 85806055539 + 85806055540.

It is an arithmetic number, because the mean of its divisors is an integer number (85806055540).

Almost surely, 2^171612111079 is an apocalyptic number.

171612111079 is a deficient number, since it is larger than the sum of its proper divisors (1).

171612111079 is an equidigital number, since it uses as much as digits as its factorization.

171612111079 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 37.

The spelling of 171612111079 in words is "one hundred seventy-one billion, six hundred twelve million, one hundred eleven thousand, seventy-nine".