166603133234420 has 48 divisors (see below), whose sum is σ = 350031780822528. Its totient is φ = 66609791278080.

The previous prime is 166603133234411. The next prime is 166603133234423. The reversal of 166603133234420 is 24432331306661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166603133234423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575414609 + ... + 575704071.

It is an arithmetic number, because the mean of its divisors is an integer number (7292328767136).

Almost surely, 2^{166603133234420} is an apocalyptic number.

166603133234420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166603133234420 is an abundant number, since it is smaller than the sum of its proper divisors (183428647588108).

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

166603133234420 is a wasteful number, since it uses less digits than its factorization.

166603133234420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302960 (or 302958 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 44.

The spelling of 166603133234420 in words is "one hundred sixty-six trillion, six hundred three billion, one hundred thirty-three million, two hundred thirty-four thousand, four hundred twenty".