166750185153 has 4 divisors (see below), whose sum is σ = 222333580208. Its totient is φ = 111166790100.

The previous prime is 166750185143. The next prime is 166750185181. The reversal of 166750185153 is 351581057661.

166750185153 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 166750185153 - 2⁴ = 166750185137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166750185143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27791697523 + ... + 27791697528.

It is an arithmetic number, because the mean of its divisors is an integer number (55583395052).

Almost surely, 2^166750185153 is an apocalyptic number.

It is an amenable number.

166750185153 is a deficient number, since it is larger than the sum of its proper divisors (55583395055).

166750185153 is an equidigital number, since it uses as much as digits as its factorization.

166750185153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55583395054.

The product of its (nonzero) digits is 756000, while the sum is 48.

The spelling of 166750185153 in words is "one hundred sixty-six billion, seven hundred fifty million, one hundred eighty-five thousand, one hundred fifty-three".