166129006 has 4 divisors (see below), whose sum is σ = 249193512. Its totient is φ = 83064502.

The previous prime is 166128997. The next prime is 166129013. The reversal of 166129006 is 600921661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 600921661 = 17 ⋅35348333.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41532250 + ... + 41532253.

It is an arithmetic number, because the mean of its divisors is an integer number (62298378).

Almost surely, 2^166129006 is an apocalyptic number.

166129006 is a deficient number, since it is larger than the sum of its proper divisors (83064506).

166129006 is an equidigital number, since it uses as much as digits as its factorization.

166129006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83064505.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 166129006 is about 12889.1041581640. The cubic root of 166129006 is about 549.7287985257.

The spelling of 166129006 in words is "one hundred sixty-six million, one hundred twenty-nine thousand, six".