172349943271 has 48 divisors (see below), whose sum is σ = 195451552800. Its totient is φ = 150684779520.

The previous prime is 172349943247. The next prime is 172349943287.

It is a happy number.

172349943271 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-172349943271 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172349943221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 493839205 + ... + 493839553.

It is an arithmetic number, because the mean of its divisors is an integer number (4071907350).

Almost surely, 2^172349943271 is an apocalyptic number.

172349943271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

172349943271 is a deficient number, since it is larger than the sum of its proper divisors (23101609529).

172349943271 is a wasteful number, since it uses less digits than its factorization.

172349943271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 637 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 52.

It can be divided in two parts, 1723 and 49943271, that added together give a palindrome (49944994).

The spelling of 172349943271 in words is "one hundred seventy-two billion, three hundred forty-nine million, nine hundred forty-three thousand, two hundred seventy-one".