20708318145 has 16 divisors (see below), whose sum is σ = 33223599360. Its totient is φ = 11014339584.

The previous prime is 20708318119. The next prime is 20708318167. The reversal of 20708318145 is 54181380702.

It is not a de Polignac number, because 20708318145 - 2²¹ = 20706220993 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1875360 + ... + 1886369.

It is an arithmetic number, because the mean of its divisors is an integer number (2076474960).

Almost surely, 2^20708318145 is an apocalyptic number.

It is an amenable number.

20708318145 is a deficient number, since it is larger than the sum of its proper divisors (12515281215).

20708318145 is a wasteful number, since it uses less digits than its factorization.

20708318145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3762104.

The product of its (nonzero) digits is 53760, while the sum is 39.

Adding to 20708318145 its reverse (54181380702), we get a palindrome (74889698847).

The spelling of 20708318145 in words is "twenty billion, seven hundred eight million, three hundred eighteen thousand, one hundred forty-five".