165343646434 has 32 divisors (see below), whose sum is σ = 259992930816. Its totient is φ = 78766162560.

The previous prime is 165343646389. The next prime is 165343646491. The reversal of 165343646434 is 434646343561.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2488189 + ... + 2553775.

It is an arithmetic number, because the mean of its divisors is an integer number (8124779088).

Almost surely, 2^165343646434 is an apocalyptic number.

165343646434 is a deficient number, since it is larger than the sum of its proper divisors (94649284382).

165343646434 is a wasteful number, since it uses less digits than its factorization.

165343646434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66250.

The product of its digits is 7464960, while the sum is 49.

Adding to 165343646434 its reverse (434646343561), we get a palindrome (599989989995).

The spelling of 165343646434 in words is "one hundred sixty-five billion, three hundred forty-three million, six hundred forty-six thousand, four hundred thirty-four".