166681150424 has 32 divisors (see below), whose sum is σ = 323487897600. Its totient is φ = 80432364960.

The previous prime is 166681150403. The next prime is 166681150429. The reversal of 166681150424 is 424051186661.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166681150429) 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, 824654 + ... + 1006685.

It is an arithmetic number, because the mean of its divisors is an integer number (10108996800).

Almost surely, 2^166681150424 is an apocalyptic number.

It is an amenable number.

166681150424 is a deficient number, since it is larger than the sum of its proper divisors (156806747176).

166681150424 is a wasteful number, since it uses less digits than its factorization.

166681150424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831743 (or 1831739 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The spelling of 166681150424 in words is "one hundred sixty-six billion, six hundred eighty-one million, one hundred fifty thousand, four hundred twenty-four".