166227243748 has 6 divisors (see below), whose sum is σ = 290897676566. Its totient is φ = 83113621872.

The previous prime is 166227243583. The next prime is 166227243769. The reversal of 166227243748 is 847342722661.

It can be written as a sum of positive squares in only one way, i.e., 139712983524 + 26514260224 = 373782^2 + 162832^2 .

It is a junction number, because it is equal to n+sod(n) for n = 166227243695 and 166227243704.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20778405465 + ... + 20778405472.

Almost surely, 2^166227243748 is an apocalyptic number.

It is an amenable number.

166227243748 is a deficient number, since it is larger than the sum of its proper divisors (124670432818).

166227243748 is a wasteful number, since it uses less digits than its factorization.

166227243748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41556810941 (or 41556810939 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 52.

The spelling of 166227243748 in words is "one hundred sixty-six billion, two hundred twenty-seven million, two hundred forty-three thousand, seven hundred forty-eight".