172142269172 has 6 divisors (see below), whose sum is σ = 301248971058. Its totient is φ = 86071134584.

The previous prime is 172142269163. The next prime is 172142269199. The reversal of 172142269172 is 271962241271.

It can be written as a sum of positive squares in only one way, i.e., 106710675556 + 65431593616 = 326666^2 + 255796^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21517783643 + ... + 21517783650.

It is an arithmetic number, because the mean of its divisors is an integer number (50208161843).

Almost surely, 2^172142269172 is an apocalyptic number.

It is an amenable number.

172142269172 is a deficient number, since it is larger than the sum of its proper divisors (129106701886).

172142269172 is a wasteful number, since it uses less digits than its factorization.

172142269172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43035567297 (or 43035567295 counting only the distinct ones).

The product of its digits is 169344, while the sum is 44.

The spelling of 172142269172 in words is "one hundred seventy-two billion, one hundred forty-two million, two hundred sixty-nine thousand, one hundred seventy-two".