172129607340 has 48 divisors (see below), whose sum is σ = 510313662432. Its totient is φ = 43201156096.

The previous prime is 172129607327. The next prime is 172129607341. The reversal of 172129607340 is 43706921271.

172129607340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 172129607292 and 172129607301.

It is not an unprimeable number, because it can be changed into a prime (172129607341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84376239 + ... + 84378278.

It is an arithmetic number, because the mean of its divisors is an integer number (10631534634).

Almost surely, 2^172129607340 is an apocalyptic number.

172129607340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172129607340 is an abundant number, since it is smaller than the sum of its proper divisors (338184055092).

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

172129607340 is a wasteful number, since it uses less digits than its factorization.

172129607340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168754546 (or 168754544 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The spelling of 172129607340 in words is "one hundred seventy-two billion, one hundred twenty-nine million, six hundred seven thousand, three hundred forty".