6555171702161 has 4 divisors (see below), whose sum is σ = 6622750791972. Its totient is φ = 6487592612352.

The previous prime is 6555171702133. The next prime is 6555171702181. The reversal of 6555171702161 is 1612071715556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3246843610000 + 3308328092161 = 1801900^2 + 1818881^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6555171702161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6555171702181) 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, 33789544760 + ... + 33789544953.

It is an arithmetic number, because the mean of its divisors is an integer number (1655687697993).

Almost surely, 2^{6555171702161} is an apocalyptic number.

It is an amenable number.

6555171702161 is a deficient number, since it is larger than the sum of its proper divisors (67579089811).

6555171702161 is an equidigital number, since it uses as much as digits as its factorization.

6555171702161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67579089810.

The product of its (nonzero) digits is 441000, while the sum is 47.

The spelling of 6555171702161 in words is "six trillion, five hundred fifty-five billion, one hundred seventy-one million, seven hundred two thousand, one hundred sixty-one".