171356120398 has 16 divisors (see below), whose sum is σ = 259023847680. Its totient is φ = 85016889016.

The previous prime is 171356120371. The next prime is 171356120417. The reversal of 171356120398 is 893021653171.

It is a happy number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 345286 + ... + 679657.

It is an arithmetic number, because the mean of its divisors is an integer number (16188990480).

Almost surely, 2^171356120398 is an apocalyptic number.

171356120398 is a deficient number, since it is larger than the sum of its proper divisors (87667727282).

171356120398 is a wasteful number, since it uses less digits than its factorization.

171356120398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025591.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 171356120398 in words is "one hundred seventy-one billion, three hundred fifty-six million, one hundred twenty thousand, three hundred ninety-eight".