20188313789345 has 16 divisors (see below), whose sum is σ = 26233654176912. Its totient is φ = 14825926990080.

The previous prime is 20188313789339. The next prime is 20188313789387. The reversal of 20188313789345 is 54398731388102.

It can be written as a sum of positive squares in 8 ways, for example, as 9194042780224 + 10994271009121 = 3032168^2 + 3315761^2 .

It is not a de Polignac number, because 20188313789345 - 2⁸ = 20188313789089 is a prime.

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, 857970122 + ... + 857993651.

It is an arithmetic number, because the mean of its divisors is an integer number (1639603386057).

Almost surely, 2^{20188313789345} is an apocalyptic number.

It is an amenable number.

20188313789345 is a deficient number, since it is larger than the sum of its proper divisors (6045340387567).

20188313789345 is a wasteful number, since it uses less digits than its factorization.

20188313789345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715963972.

The product of its (nonzero) digits is 34836480, while the sum is 62.

The spelling of 20188313789345 in words is "twenty trillion, one hundred eighty-eight billion, three hundred thirteen million, seven hundred eighty-nine thousand, three hundred forty-five".