20886136343 has 4 divisors (see below), whose sum is σ = 21371860488. Its totient is φ = 20400412200.

The previous prime is 20886136291. The next prime is 20886136363. The reversal of 20886136343 is 34363168802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20886136343 - 2⁸ = 20886136087 is a prime.

It is a super-3 number, since 3×20886136343³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20886136294 and 20886136303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20886136363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242862008 + ... + 242862093.

It is an arithmetic number, because the mean of its divisors is an integer number (5342965122).

Almost surely, 2^20886136343 is an apocalyptic number.

20886136343 is a deficient number, since it is larger than the sum of its proper divisors (485724145).

20886136343 is an equidigital number, since it uses as much as digits as its factorization.

20886136343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485724144.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 20886136343 in words is "twenty billion, eight hundred eighty-six million, one hundred thirty-six thousand, three hundred forty-three".