166078546673 has 16 divisors (see below), whose sum is σ = 185199705600. Its totient is φ = 147874144320.

The previous prime is 166078546657. The next prime is 166078546721. The reversal of 166078546673 is 376645870661.

It is a cyclic number.

It is not a de Polignac number, because 166078546673 - 2⁴ = 166078546657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166078546643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179708 + ... + 603698.

It is an arithmetic number, because the mean of its divisors is an integer number (11574981600).

Almost surely, 2^166078546673 is an apocalyptic number.

166078546673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

166078546673 is a deficient number, since it is larger than the sum of its proper divisors (19121158927).

166078546673 is a wasteful number, since it uses less digits than its factorization.

166078546673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425072.

The product of its (nonzero) digits is 30481920, while the sum is 59.

The spelling of 166078546673 in words is "one hundred sixty-six billion, seventy-eight million, five hundred forty-six thousand, six hundred seventy-three".