166012242916 has 27 divisors (see below), whose sum is σ = 314608364553. Its totient is φ = 76616145840.

The previous prime is 166012242899. The next prime is 166012242953. The reversal of 166012242916 is 619242210661.

The square root of 166012242916 is 407446.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 24558024100 + 141454218816 = 156710^2 + 376104^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 10585761 + ... + 10601431.

Almost surely, 2^166012242916 is an apocalyptic number.

166012242916 is the 407446-th square number.

It is an amenable number.

166012242916 is a deficient number, since it is larger than the sum of its proper divisors (148596121637).

166012242916 is an frugal number, since it uses more digits than its factorization.

166012242916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31372 (or 15686 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 166012242916 in words is "one hundred sixty-six billion, twelve million, two hundred forty-two thousand, nine hundred sixteen".