5165161550565 has 32 divisors (see below), whose sum is σ = 8652235777920. Its totient is φ = 2627716014336.

The previous prime is 5165161550551. The next prime is 5165161550629. The reversal of 5165161550565 is 5650551615615.

It is not a de Polignac number, because 5165161550565 - 2⁶ = 5165161550501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71493622 + ... + 71565831.

It is an arithmetic number, because the mean of its divisors is an integer number (270382368060).

Almost surely, 2^{5165161550565} is an apocalyptic number.

It is an amenable number.

5165161550565 is a deficient number, since it is larger than the sum of its proper divisors (3487074227355).

5165161550565 is a wasteful number, since it uses less digits than its factorization.

5165161550565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143059573.

The product of its (nonzero) digits is 3375000, while the sum is 51.

The spelling of 5165161550565 in words is "five trillion, one hundred sixty-five billion, one hundred sixty-one million, five hundred fifty thousand, five hundred sixty-five".