166673405505 has 16 divisors (see below), whose sum is σ = 266683233600. Its totient is φ = 88890554688.

The previous prime is 166673405489. The next prime is 166673405567. The reversal of 166673405505 is 505504376661.

It is not a de Polignac number, because 166673405505 - 2⁴ = 166673405489 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, 842019 + ... + 1020951.

It is an arithmetic number, because the mean of its divisors is an integer number (16667702100).

Almost surely, 2^166673405505 is an apocalyptic number.

166673405505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166673405505 is a deficient number, since it is larger than the sum of its proper divisors (100009828095).

166673405505 is a wasteful number, since it uses less digits than its factorization.

166673405505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241040.

The product of its (nonzero) digits is 2268000, while the sum is 48.

The spelling of 166673405505 in words is "one hundred sixty-six billion, six hundred seventy-three million, four hundred five thousand, five hundred five".