172600818081 has 8 divisors (see below), whose sum is σ = 230136369120. Its totient is φ = 115066239552.

The previous prime is 172600818079. The next prime is 172600818109. The reversal of 172600818081 is 180818006271.

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

It is not a de Polignac number, because 172600818081 - 2¹ = 172600818079 is a prime.

It is a super-2 number, since 2×172600818081² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172600818011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468841 + ... + 751673.

It is an arithmetic number, because the mean of its divisors is an integer number (28767046140).

Almost surely, 2^172600818081 is an apocalyptic number.

It is an amenable number.

172600818081 is a deficient number, since it is larger than the sum of its proper divisors (57535551039).

172600818081 is a wasteful number, since it uses less digits than its factorization.

172600818081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486255.

The product of its (nonzero) digits is 43008, while the sum is 42.

The spelling of 172600818081 in words is "one hundred seventy-two billion, six hundred million, eight hundred eighteen thousand, eighty-one".