171148771922 has 6 divisors (see below), whose sum is σ = 256724035479. Its totient is φ = 85574093430.

The previous prime is 171148771907. The next prime is 171148771987. The reversal of 171148771922 is 229177841171.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 85574385961 + 85574385961 = 292531^2 + 292531^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=292531.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 438797 + ... + 731327.

Almost surely, 2^171148771922 is an apocalyptic number.

171148771922 is a deficient number, since it is larger than the sum of its proper divisors (85575263557).

171148771922 is an frugal number, since it uses more digits than its factorization.

171148771922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 585064 (or 292533 counting only the distinct ones).

The product of its digits is 395136, while the sum is 50.

Multiplying 171148771922 by its sum of digits (50), we get a square (8557438596100 = 2925310²).

The spelling of 171148771922 in words is "one hundred seventy-one billion, one hundred forty-eight million, seven hundred seventy-one thousand, nine hundred twenty-two".