166559136 has 48 divisors (see below), whose sum is σ = 443225664. Its totient is φ = 54756864.

The previous prime is 166559131. The next prime is 166559177. The reversal of 166559136 is 631955661.

166559136 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (166559131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4876 + ... + 18891.

It is an arithmetic number, because the mean of its divisors is an integer number (9233868).

Almost surely, 2^166559136 is an apocalyptic number.

166559136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

166559136 is an abundant number, since it is smaller than the sum of its proper divisors (276666528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166559136 is a wasteful number, since it uses less digits than its factorization.

166559136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23853 (or 23845 counting only the distinct ones).

The product of its digits is 145800, while the sum is 42.

The square root of 166559136 is about 12905.7791705887. The cubic root of 166559136 is about 550.2028298741.

The spelling of 166559136 in words is "one hundred sixty-six million, five hundred fifty-nine thousand, one hundred thirty-six".