20730173365 has 16 divisors (see below), whose sum is σ = 27768793536. Its totient is φ = 14725872000.

The previous prime is 20730173323. The next prime is 20730173377. The reversal of 20730173365 is 56337103702.

It is not a de Polignac number, because 20730173365 - 2²³ = 20721784757 is a prime.

It is a congruent number.

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, 4380336 + ... + 4385065.

It is an arithmetic number, because the mean of its divisors is an integer number (1735549596).

Almost surely, 2^20730173365 is an apocalyptic number.

It is an amenable number.

20730173365 is a deficient number, since it is larger than the sum of its proper divisors (7038620171).

20730173365 is a wasteful number, since it uses less digits than its factorization.

20730173365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8765460.

The product of its (nonzero) digits is 79380, while the sum is 37.

The spelling of 20730173365 in words is "twenty billion, seven hundred thirty million, one hundred seventy-three thousand, three hundred sixty-five".