166147363871 has 8 divisors (see below), whose sum is σ = 167457747600. Its totient is φ = 164839584448.

The previous prime is 166147363849. The next prime is 166147363883. The reversal of 166147363871 is 178363741661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166147363871 - 2¹⁸ = 166147101727 is a prime.

It is a super-2 number, since 2×166147363871² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166147363891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 522881 + ... + 778266.

It is an arithmetic number, because the mean of its divisors is an integer number (20932218450).

Almost surely, 2^166147363871 is an apocalyptic number.

166147363871 is a deficient number, since it is larger than the sum of its proper divisors (1310383729).

166147363871 is a wasteful number, since it uses less digits than its factorization.

166147363871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302153.

The product of its digits is 3048192, while the sum is 53.

The spelling of 166147363871 in words is "one hundred sixty-six billion, one hundred forty-seven million, three hundred sixty-three thousand, eight hundred seventy-one".