166210893629 has 6 divisors (see below), whose sum is σ = 182694618750. Its totient is φ = 151100812280.

The previous prime is 166210893601. The next prime is 166210893631. The reversal of 166210893629 is 926398012661.

It can be written as a sum of positive squares in only one way, i.e., 166159771129 + 51122500 = 407627^2 + 7150^2 .

It is a de Polignac number, because none of the positive numbers 2^k-166210893629 is a prime.

It is a super-2 number, since 2×166210893629² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166210893679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 686821754 + ... + 686821995.

It is an arithmetic number, because the mean of its divisors is an integer number (30449103125).

Almost surely, 2^166210893629 is an apocalyptic number.

It is an amenable number.

166210893629 is a deficient number, since it is larger than the sum of its proper divisors (16483725121).

166210893629 is a wasteful number, since it uses less digits than its factorization.

166210893629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373643771 (or 1373643760 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 53.

The spelling of 166210893629 in words is "one hundred sixty-six billion, two hundred ten million, eight hundred ninety-three thousand, six hundred twenty-nine".