171172112730 has 32 divisors (see below), whose sum is σ = 410828112000. Its totient is φ = 45644225472.

The previous prime is 171172112669. The next prime is 171172112831. The reversal of 171172112730 is 37211271171.

It is a super-3 number, since 3×171172112730³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 171172112691 and 171172112700.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 880971 + ... + 1057569.

It is an arithmetic number, because the mean of its divisors is an integer number (12838378500).

Almost surely, 2^171172112730 is an apocalyptic number.

171172112730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

171172112730 is an abundant number, since it is smaller than the sum of its proper divisors (239655999270).

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

171172112730 is a wasteful number, since it uses less digits than its factorization.

171172112730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208918.

The product of its (nonzero) digits is 4116, while the sum is 33.

The spelling of 171172112730 in words is "one hundred seventy-one billion, one hundred seventy-two million, one hundred twelve thousand, seven hundred thirty".