165143642124026 has 16 divisors (see below), whose sum is σ = 247760292642408. Its totient is φ = 82556878598400.

The previous prime is 165143642124011. The next prime is 165143642124047. The reversal of 165143642124026 is 620421246341561.

It can be written as a sum of positive squares in 4 ways, for example, as 111204385531801 + 53939256592225 = 10545349^2 + 7344335^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560686436 + ... + 560980896.

Almost surely, 2^{165143642124026} is an apocalyptic number.

165143642124026 is a deficient number, since it is larger than the sum of its proper divisors (82616650518382).

165143642124026 is a wasteful number, since it uses less digits than its factorization.

165143642124026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344257.

The product of its (nonzero) digits is 1658880, while the sum is 47.

Adding to 165143642124026 its reverse (620421246341561), we get a palindrome (785564888465587).

The spelling of 165143642124026 in words is "one hundred sixty-five trillion, one hundred forty-three billion, six hundred forty-two million, one hundred twenty-four thousand, twenty-six".