171616068778 has 48 divisors (see below), whose sum is σ = 323476130880. Its totient is φ = 66842645760.

The previous prime is 171616068769. The next prime is 171616068809. The reversal of 171616068778 is 877860616171.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6157338 + ... + 6185146.

It is an arithmetic number, because the mean of its divisors is an integer number (6739086060).

Almost surely, 2^171616068778 is an apocalyptic number.

171616068778 is a deficient number, since it is larger than the sum of its proper divisors (151860062102).

171616068778 is a wasteful number, since it uses less digits than its factorization.

171616068778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31483 (or 31472 counting only the distinct ones).

The product of its (nonzero) digits is 4741632, while the sum is 58.

The spelling of 171616068778 in words is "one hundred seventy-one billion, six hundred sixteen million, sixty-eight thousand, seven hundred seventy-eight".