171922978748 has 12 divisors (see below), whose sum is σ = 302424101280. Its totient is φ = 85516092672.

The previous prime is 171922978729. The next prime is 171922978823. The reversal of 171922978748 is 847879229171.

171922978748 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111348308 + ... + 111349851.

It is an arithmetic number, because the mean of its divisors is an integer number (25202008440).

Almost surely, 2^171922978748 is an apocalyptic number.

It is an amenable number.

171922978748 is a deficient number, since it is larger than the sum of its proper divisors (130501122532).

171922978748 is a wasteful number, since it uses less digits than its factorization.

171922978748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222698356 (or 222698354 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 65.

The spelling of 171922978748 in words is "one hundred seventy-one billion, nine hundred twenty-two million, nine hundred seventy-eight thousand, seven hundred forty-eight".