172057161667 has 16 divisors (see below), whose sum is σ = 174525310080. Its totient is φ = 169608416832.

The previous prime is 172057161643. The next prime is 172057161677. The reversal of 172057161667 is 766161750271.

It is a cyclic number.

It is not a de Polignac number, because 172057161667 - 2¹¹ = 172057159619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 172057161667.

It is not an unprimeable number, because it can be changed into a prime (172057161677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34007584 + ... + 34012642.

It is an arithmetic number, because the mean of its divisors is an integer number (10907831880).

Almost surely, 2^172057161667 is an apocalyptic number.

172057161667 is a deficient number, since it is larger than the sum of its proper divisors (2468148413).

172057161667 is a wasteful number, since it uses less digits than its factorization.

172057161667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6882.

The product of its (nonzero) digits is 740880, while the sum is 49.

The spelling of 172057161667 in words is "one hundred seventy-two billion, fifty-seven million, one hundred sixty-one thousand, six hundred sixty-seven".