166334026665 has 16 divisors (see below), whose sum is σ = 266160139200. Its totient is φ = 88702915392.

The previous prime is 166334026637. The next prime is 166334026693. The reversal of 166334026665 is 566620433661.

It is an interprime number because it is at equal distance from previous prime (166334026637) and next prime (166334026693).

It is not a de Polignac number, because 166334026665 - 2¹⁵ = 166333993897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 373230 + ... + 686999.

It is an arithmetic number, because the mean of its divisors is an integer number (16635008700).

Almost surely, 2^166334026665 is an apocalyptic number.

166334026665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166334026665 is a deficient number, since it is larger than the sum of its proper divisors (99826112535).

166334026665 is a wasteful number, since it uses less digits than its factorization.

166334026665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070696.

The product of its (nonzero) digits is 2799360, while the sum is 48.

The spelling of 166334026665 in words is "one hundred sixty-six billion, three hundred thirty-four million, twenty-six thousand, six hundred sixty-five".