172343036220 has 48 divisors (see below), whose sum is σ = 510946416288. Its totient is φ = 43254722560.

The previous prime is 172343036207. The next prime is 172343036221. The reversal of 172343036220 is 22630343271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172343036221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84480861 + ... + 84482900.

It is an arithmetic number, because the mean of its divisors is an integer number (10644717006).

Almost surely, 2^172343036220 is an apocalyptic number.

172343036220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172343036220 is an abundant number, since it is smaller than the sum of its proper divisors (338603380068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172343036220 is a wasteful number, since it uses less digits than its factorization.

172343036220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168963790 (or 168963788 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 33.

Adding to 172343036220 its reverse (22630343271), we get a palindrome (194973379491).

The spelling of 172343036220 in words is "one hundred seventy-two billion, three hundred forty-three million, thirty-six thousand, two hundred twenty".