166882513428738 has 32 divisors (see below), whose sum is σ = 382812934033920. Its totient is φ = 53833068847440.

The previous prime is 166882513428691. The next prime is 166882513428767. The reversal of 166882513428738 is 837824315288661.

It is a happy number.

166882513428738 is a `hidden beast` number, since 1 + 6 + 6 + 8 + 82 + 51 + 3 + 428 + 73 + 8 = 666.

166882513428738 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49845432445 + ... + 49845435792.

It is an arithmetic number, because the mean of its divisors is an integer number (11962904188560).

Almost surely, 2^{166882513428738} is an apocalyptic number.

166882513428738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

166882513428738 is an abundant number, since it is smaller than the sum of its proper divisors (215930420605182).

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

166882513428738 is a wasteful number, since it uses less digits than its factorization.

166882513428738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99690868279 (or 99690868273 counting only the distinct ones).

The product of its digits is 743178240, while the sum is 72.

The spelling of 166882513428738 in words is "one hundred sixty-six trillion, eight hundred eighty-two billion, five hundred thirteen million, four hundred twenty-eight thousand, seven hundred thirty-eight".