166651061600 has 36 divisors (see below), whose sum is σ = 406836906084. Its totient is φ = 66660424320.

The previous prime is 166651061597. The next prime is 166651061651. The reversal of 166651061600 is 6160156661.

It is a happy number.

166651061600 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 104156114 + ... + 104157713.

It is an arithmetic number, because the mean of its divisors is an integer number (11301025169).

Almost surely, 2^166651061600 is an apocalyptic number.

166651061600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166651061600 is an abundant number, since it is smaller than the sum of its proper divisors (240185844484).

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

166651061600 is a wasteful number, since it uses less digits than its factorization.

166651061600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208313847 (or 208313834 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 38.

The spelling of 166651061600 in words is "one hundred sixty-six billion, six hundred fifty-one million, sixty-one thousand, six hundred".