151666166 has 4 divisors (see below), whose sum is σ = 227499252. Its totient is φ = 75833082.

The previous prime is 151666157. The next prime is 151666171. The reversal of 151666166 is 661666151.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661666151 = 53 ⋅12484267.

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, 37916540 + ... + 37916543.

It is an arithmetic number, because the mean of its divisors is an integer number (56874813).

Almost surely, 2^151666166 is an apocalyptic number.

151666166 is a deficient number, since it is larger than the sum of its proper divisors (75833086).

151666166 is an equidigital number, since it uses as much as digits as its factorization.

151666166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75833085.

The product of its digits is 38880, while the sum is 38.

The square root of 151666166 is about 12315.2818075755. The cubic root of 151666166 is about 533.2893402080.

The spelling of 151666166 in words is "one hundred fifty-one million, six hundred sixty-six thousand, one hundred sixty-six".