20175020312 has 16 divisors (see below), whose sum is σ = 38024166840. Its totient is φ = 10035242496.

The previous prime is 20175020291. The next prime is 20175020321. The reversal of 20175020312 is 21302057102.

It is a happy number.

It is a super-2 number, since 2×20175020312² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6531818 + ... + 6534905.

Almost surely, 2^20175020312 is an apocalyptic number.

It is an amenable number.

20175020312 is a deficient number, since it is larger than the sum of its proper divisors (17849146528).

20175020312 is a wasteful number, since it uses less digits than its factorization.

20175020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13066922 (or 13066918 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

Adding to 20175020312 its reverse (21302057102), we get a palindrome (41477077414).

The spelling of 20175020312 in words is "twenty billion, one hundred seventy-five million, twenty thousand, three hundred twelve".