166751120147 has 4 divisors (see below), whose sum is σ = 171257907216. Its totient is φ = 162244333080.

The previous prime is 166751120101. The next prime is 166751120149. The reversal of 166751120147 is 741021157661.

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: 741021157661 = 12289 ⋅60299549.

It is a cyclic number.

It is not a de Polignac number, because 166751120147 - 2³² = 162456152851 is a prime.

It is a super-3 number, since 3×166751120147³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166751120149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2253393479 + ... + 2253393552.

It is an arithmetic number, because the mean of its divisors is an integer number (42814476804).

Almost surely, 2^166751120147 is an apocalyptic number.

166751120147 is a deficient number, since it is larger than the sum of its proper divisors (4506787069).

166751120147 is an equidigital number, since it uses as much as digits as its factorization.

166751120147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506787068.

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 166751120147 in words is "one hundred sixty-six billion, seven hundred fifty-one million, one hundred twenty thousand, one hundred forty-seven".