166886211748 has 12 divisors (see below), whose sum is σ = 292109397580. Its totient is φ = 83426383872.

The previous prime is 166886211743. The next prime is 166886211829. The reversal of 166886211748 is 847112688661.

It can be written as a sum of positive squares in 2 ways, for example, as 83244944484 + 83641267264 = 288522^2 + 289208^2 .

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 166886211692 and 166886211701.

It is not an unprimeable number, because it can be changed into a prime (166886211743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4158033 + ... + 4197976.

Almost surely, 2^166886211748 is an apocalyptic number.

It is an amenable number.

166886211748 is a deficient number, since it is larger than the sum of its proper divisors (125223185832).

166886211748 is a wasteful number, since it uses less digits than its factorization.

166886211748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8361006 (or 8361004 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 58.

The spelling of 166886211748 in words is "one hundred sixty-six billion, eight hundred eighty-six million, two hundred eleven thousand, seven hundred forty-eight".