20886753438 has 24 divisors (see below), whose sum is σ = 45655120368. Its totient is φ = 6900637632.

The previous prime is 20886753379. The next prime is 20886753443. The reversal of 20886753438 is 83435768802.

20886753438 is a `hidden beast` number, since 20 + 8 + 86 + 7 + 534 + 3 + 8 = 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, 5132370 + ... + 5136437.

It is an arithmetic number, because the mean of its divisors is an integer number (1902296682).

Almost surely, 2^20886753438 is an apocalyptic number.

20886753438 is an abundant number, since it is smaller than the sum of its proper divisors (24768366930).

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

20886753438 is a wasteful number, since it uses less digits than its factorization.

20886753438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10268928 (or 10268925 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 20886753438 in words is "twenty billion, eight hundred eighty-six million, seven hundred fifty-three thousand, four hundred thirty-eight".