165293291444 has 48 divisors (see below), whose sum is σ = 296556558480. Its totient is φ = 80583659520.

The previous prime is 165293291441. The next prime is 165293291489. The reversal of 165293291444 is 444192392561.

It can be written as a sum of positive squares in 8 ways, for example, as 345216400 + 164948075044 = 18580^2 + 406138^2 .

It is a super-2 number, since 2×165293291444² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 165293291392 and 165293291401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165293291441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28103384 + ... + 28109264.

It is an arithmetic number, because the mean of its divisors is an integer number (6178261635).

Almost surely, 2^165293291444 is an apocalyptic number.

It is an amenable number.

165293291444 is a deficient number, since it is larger than the sum of its proper divisors (131263267036).

165293291444 is a wasteful number, since it uses less digits than its factorization.

165293291444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6740 (or 6738 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 50.

The spelling of 165293291444 in words is "one hundred sixty-five billion, two hundred ninety-three million, two hundred ninety-one thousand, four hundred forty-four".