166450303638 has 24 divisors (see below), whose sum is σ = 361164265176. Its totient is φ = 55403136000.

The previous prime is 166450303637. The next prime is 166450303673. The reversal of 166450303638 is 836303054661.

166450303638 is a `hidden beast` number, since 1 + 6 + 6 + 4 + 5 + 0 + 3 + 0 + 3 + 638 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 166450303593 and 166450303602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166450303637) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6678763 + ... + 6703638.

It is an arithmetic number, because the mean of its divisors is an integer number (15048511049).

Almost surely, 2^166450303638 is an apocalyptic number.

166450303638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

166450303638 is an abundant number, since it is smaller than the sum of its proper divisors (194713961538).

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

166450303638 is a wasteful number, since it uses less digits than its factorization.

166450303638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13383100 (or 13383097 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 45.

The spelling of 166450303638 in words is "one hundred sixty-six billion, four hundred fifty million, three hundred three thousand, six hundred thirty-eight".