166645737041152 has 18 divisors (see below), whose sum is σ = 332640514172498. Its totient is φ = 83322868520448.

The previous prime is 166645737041143. The next prime is 166645737041177. The reversal of 166645737041152 is 251140737546661.

166645737041152 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 114571848222976 + 52073888818176 = 10703824^2 + 7216224^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 325479954903 + ... + 325479955414.

Almost surely, 2^{166645737041152} is an apocalyptic number.

It is an amenable number.

166645737041152 is a deficient number, since it is larger than the sum of its proper divisors (165994777131346).

166645737041152 is an frugal number, since it uses more digits than its factorization.

166645737041152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650959910333 (or 650959910319 counting only the distinct ones).

The product of its (nonzero) digits is 25401600, while the sum is 58.

The spelling of 166645737041152 in words is "one hundred sixty-six trillion, six hundred forty-five billion, seven hundred thirty-seven million, forty-one thousand, one hundred fifty-two".