20641814748216 has 48 divisors (see below), whose sum is σ = 56670735710160. Its totient is φ = 6786350052480.

The previous prime is 20641814748131. The next prime is 20641814748257. The reversal of 20641814748216 is 61284741814602.

20641814748216 is a `hidden beast` number, since 2 + 0 + 6 + 4 + 1 + 8 + 147 + 482 + 16 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1963637700 + ... + 1963648211.

It is an arithmetic number, because the mean of its divisors is an integer number (1180640327295).

Almost surely, 2^{20641814748216} is an apocalyptic number.

It is an amenable number.

20641814748216 is an abundant number, since it is smaller than the sum of its proper divisors (36028920961944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20641814748216 is a wasteful number, since it uses less digits than its factorization.

20641814748216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927285996 (or 3927285989 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 54.

The spelling of 20641814748216 in words is "twenty trillion, six hundred forty-one billion, eight hundred fourteen million, seven hundred forty-eight thousand, two hundred sixteen".