20730407325165 has 16 divisors (see below), whose sum is σ = 36854057467200. Its totient is φ = 11056217240016.

The previous prime is 20730407325163. The next prime is 20730407325169. The reversal of 20730407325165 is 56152370403702.

20730407325165 is a `hidden beast` number, since 2 + 0 + 7 + 304 + 0 + 7 + 325 + 16 + 5 = 666.

It is not a de Polignac number, because 20730407325165 - 2¹ = 20730407325163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 20730407325165.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20730407325163) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 76779286255 + ... + 76779286524.

It is an arithmetic number, because the mean of its divisors is an integer number (2303378591700).

Almost surely, 2^{20730407325165} is an apocalyptic number.

It is an amenable number.

20730407325165 is a deficient number, since it is larger than the sum of its proper divisors (16123650142035).

20730407325165 is a wasteful number, since it uses less digits than its factorization.

20730407325165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153558572793 (or 153558572787 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 45.

Adding to 20730407325165 its reverse (56152370403702), we get a palindrome (76882777728867).

The spelling of 20730407325165 in words is "twenty trillion, seven hundred thirty billion, four hundred seven million, three hundred twenty-five thousand, one hundred sixty-five".