172151872162 has 8 divisors (see below), whose sum is σ = 258414798492. Its totient is φ = 86013606000.

The previous prime is 172151872157. The next prime is 172151872163. The reversal of 172151872162 is 261278151271.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 166120641241 + 6031230921 = 407579^2 + 77661^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (172151872163) 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, 31161589 + ... + 31167112.

Almost surely, 2^172151872162 is an apocalyptic number.

172151872162 is a deficient number, since it is larger than the sum of its proper divisors (86262926330).

172151872162 is a wasteful number, since it uses less digits than its factorization.

172151872162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62330084.

The product of its digits is 94080, while the sum is 43.

The spelling of 172151872162 in words is "one hundred seventy-two billion, one hundred fifty-one million, eight hundred seventy-two thousand, one hundred sixty-two".