162172771671 has 16 divisors (see below), whose sum is σ = 222175112544. Its totient is φ = 105145455744.

The previous prime is 162172771667. The next prime is 162172771693. The reversal of 162172771671 is 176177271261.

It is a happy number.

It is not a de Polignac number, because 162172771671 - 2² = 162172771667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162172771671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162172771601) 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, 84456 + ... + 575741.

It is an arithmetic number, because the mean of its divisors is an integer number (13885944534).

Almost surely, 2^162172771671 is an apocalyptic number.

162172771671 is a deficient number, since it is larger than the sum of its proper divisors (60002340873).

162172771671 is a wasteful number, since it uses less digits than its factorization.

162172771671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662450.

The product of its digits is 345744, while the sum is 48.

The spelling of 162172771671 in words is "one hundred sixty-two billion, one hundred seventy-two million, seven hundred seventy-one thousand, six hundred seventy-one".