20838654736 has 45 divisors (see below), whose sum is σ = 40814818023. Its totient is φ = 10307018400.

The previous prime is 20838654731. The next prime is 20838654817. The reversal of 20838654736 is 63745683802.

The square root of 20838654736 is 144356.

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 (20838654731) by changing a digit.

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 8 ways as a sum of consecutive naturals, for example, 87190905 + ... + 87191143.

Almost surely, 2^20838654736 is an apocalyptic number.

20838654736 is the 144356-th square number.

It is an amenable number.

20838654736 is a deficient number, since it is larger than the sum of its proper divisors (19976163287).

20838654736 is an frugal number, since it uses more digits than its factorization.

20838654736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 52.

The spelling of 20838654736 in words is "twenty billion, eight hundred thirty-eight million, six hundred fifty-four thousand, seven hundred thirty-six".