171164215078 has 16 divisors (see below), whose sum is σ = 257754182400. Its totient is φ = 85246234696.

The previous prime is 171164215051. The next prime is 171164215111. The reversal of 171164215078 is 870512461171.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5981601 + ... + 6010147.

It is an arithmetic number, because the mean of its divisors is an integer number (16109636400).

Almost surely, 2^171164215078 is an apocalyptic number.

171164215078 is a deficient number, since it is larger than the sum of its proper divisors (86589967322).

171164215078 is a wasteful number, since it uses less digits than its factorization.

171164215078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40211.

The product of its (nonzero) digits is 94080, while the sum is 43.

The spelling of 171164215078 in words is "one hundred seventy-one billion, one hundred sixty-four million, two hundred fifteen thousand, seventy-eight".