172004232205 has 32 divisors (see below), whose sum is σ = 227568499200. Its totient is φ = 124011136512.

The previous prime is 172004232181. The next prime is 172004232229. The reversal of 172004232205 is 502232400271.

It is an interprime number because it is at equal distance from previous prime (172004232181) and next prime (172004232229).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172004232205 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1180666 + ... + 1318324.

It is an arithmetic number, because the mean of its divisors is an integer number (7111515600).

Almost surely, 2^172004232205 is an apocalyptic number.

It is an amenable number.

172004232205 is a deficient number, since it is larger than the sum of its proper divisors (55564266995).

172004232205 is a wasteful number, since it uses less digits than its factorization.

172004232205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138133.

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 172004232205 its reverse (502232400271), we get a palindrome (674236632476).

The spelling of 172004232205 in words is "one hundred seventy-two billion, four million, two hundred thirty-two thousand, two hundred five".