20705483236 has 9 divisors (see below), whose sum is σ = 36235099299. Its totient is φ = 10352597724.

The previous prime is 20705483233. The next prime is 20705483237. The reversal of 20705483236 is 63238450702.

The square root of 20705483236 is 143894.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20705483233) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 251815 + ... + 323761.

Almost surely, 2^20705483236 is an apocalyptic number.

20705483236 is the 143894-th square number.

It is an amenable number.

20705483236 is a deficient number, since it is larger than the sum of its proper divisors (15529616063).

20705483236 is an frugal number, since it uses more digits than its factorization.

20705483236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143898 (or 71949 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 20705483236 in words is "twenty billion, seven hundred five million, four hundred eighty-three thousand, two hundred thirty-six".