161161551110071 has 2 divisors, whose sum is σ = 161161551110072. Its totient is φ = 161161551110070.

The previous prime is 161161551110059. The next prime is 161161551110117. The reversal of 161161551110071 is 170011155161161.

161161551110071 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 an emirp because it is prime and its reverse (170011155161161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161161551110071 - 2⁷ = 161161551109943 is a prime.

It is a super-3 number, since 3×161161551110071³ (a number of 44 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161161551110071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161161551110041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80580775555035 + 80580775555036.

It is an arithmetic number, because the mean of its divisors is an integer number (80580775555036).

Almost surely, 2^{161161551110071} is an apocalyptic number.

161161551110071 is a deficient number, since it is larger than the sum of its proper divisors (1).

161161551110071 is an equidigital number, since it uses as much as digits as its factorization.

161161551110071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6300, while the sum is 37.

The spelling of 161161551110071 in words is "one hundred sixty-one trillion, one hundred sixty-one billion, five hundred fifty-one million, one hundred ten thousand, seventy-one".