165012133129 has 4 divisors (see below), whose sum is σ = 166526006020. Its totient is φ = 163498260240.

The previous prime is 165012133127. The next prime is 165012133159. The reversal of 165012133129 is 921331210561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128855871225 + 36156261904 = 358965^2 + 190148^2 .

It is a cyclic number.

It is not a de Polignac number, because 165012133129 - 2¹ = 165012133127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 165012133094 and 165012133103.

It is not an unprimeable number, because it can be changed into a prime (165012133123) 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, 756936282 + ... + 756936499.

It is an arithmetic number, because the mean of its divisors is an integer number (41631501505).

Almost surely, 2^165012133129 is an apocalyptic number.

It is an amenable number.

165012133129 is a deficient number, since it is larger than the sum of its proper divisors (1513872891).

165012133129 is a wasteful number, since it uses less digits than its factorization.

165012133129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1513872890.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 165012133129 in words is "one hundred sixty-five billion, twelve million, one hundred thirty-three thousand, one hundred twenty-nine".