171261055106061 has 4 divisors (see below), whose sum is σ = 228348073474752. Its totient is φ = 114174036737372.

The previous prime is 171261055105963. The next prime is 171261055106069. The reversal of 171261055106061 is 160601550162171.

171261055106061 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-171261055106061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171261055106069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28543509184341 + ... + 28543509184346.

It is an arithmetic number, because the mean of its divisors is an integer number (57087018368688).

Almost surely, 2^{171261055106061} is an apocalyptic number.

It is an amenable number.

171261055106061 is a deficient number, since it is larger than the sum of its proper divisors (57087018368691).

171261055106061 is an equidigital number, since it uses as much as digits as its factorization.

171261055106061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57087018368690.

The product of its (nonzero) digits is 75600, while the sum is 42.

The spelling of 171261055106061 in words is "one hundred seventy-one trillion, two hundred sixty-one billion, fifty-five million, one hundred six thousand, sixty-one".