171092739812 has 6 divisors (see below), whose sum is σ = 299412294678. Its totient is φ = 85546369904.

The previous prime is 171092739799. The next prime is 171092739827. The reversal of 171092739812 is 218937290171.

It can be written as a sum of positive squares in only one way, i.e., 159923209216 + 11169530596 = 399904^2 + 105686^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21386592473 + ... + 21386592480.

It is an arithmetic number, because the mean of its divisors is an integer number (49902049113).

Almost surely, 2^171092739812 is an apocalyptic number.

It is an amenable number.

171092739812 is a deficient number, since it is larger than the sum of its proper divisors (128319554866).

171092739812 is a wasteful number, since it uses less digits than its factorization.

171092739812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42773184957 (or 42773184955 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 50.

The spelling of 171092739812 in words is "one hundred seventy-one billion, ninety-two million, seven hundred thirty-nine thousand, eight hundred twelve".