171940775194056 has 64 divisors (see below), whose sum is σ = 470075913806400. Its totient is φ = 51975873331200.

The previous prime is 171940775194049. The next prime is 171940775194061. The reversal of 171940775194056 is 650491577049171.

It is a super-2 number, since 2×171940775194056² (a number of 29 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (66) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 796091065 + ... + 796307016.

It is an arithmetic number, because the mean of its divisors is an integer number (7344936153225).

Almost surely, 2^{171940775194056} is an apocalyptic number.

It is an amenable number.

171940775194056 is an abundant number, since it is smaller than the sum of its proper divisors (298135138612344).

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

171940775194056 is a wasteful number, since it uses less digits than its factorization.

171940775194056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592398510 (or 1592398506 counting only the distinct ones).

The product of its (nonzero) digits is 66679200, while the sum is 66.

The spelling of 171940775194056 in words is "one hundred seventy-one trillion, nine hundred forty billion, seven hundred seventy-five million, one hundred ninety-four thousand, fifty-six".