165126996968 has 8 divisors (see below), whose sum is σ = 309613119330. Its totient is φ = 82563498480.

The previous prime is 165126996919. The next prime is 165126996977. The reversal of 165126996968 is 869699621561.

It can be written as a sum of positive squares in only one way, i.e., 154447428004 + 10679568964 = 392998^2 + 103342^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 165126996898 and 165126996907.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10320437303 + ... + 10320437318.

Almost surely, 2^165126996968 is an apocalyptic number.

It is an amenable number.

165126996968 is a deficient number, since it is larger than the sum of its proper divisors (144486122362).

165126996968 is a wasteful number, since it uses less digits than its factorization.

165126996968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20640874627 (or 20640874623 counting only the distinct ones).

The product of its digits is 75582720, while the sum is 68.

The spelling of 165126996968 in words is "one hundred sixty-five billion, one hundred twenty-six million, nine hundred ninety-six thousand, nine hundred sixty-eight".