20206776543 has 8 divisors (see below), whose sum is σ = 27006672000. Its totient is φ = 13439032728.

The previous prime is 20206776517. The next prime is 20206776559. The reversal of 20206776543 is 34567760202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20206776543 - 2⁵ = 20206776511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20206776495 and 20206776504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20206776563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8036443 + ... + 8038956.

It is an arithmetic number, because the mean of its divisors is an integer number (3375834000).

Almost surely, 2^20206776543 is an apocalyptic number.

20206776543 is a deficient number, since it is larger than the sum of its proper divisors (6799895457).

20206776543 is a wasteful number, since it uses less digits than its factorization.

20206776543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16075821.

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 20206776543 in words is "twenty billion, two hundred six million, seven hundred seventy-six thousand, five hundred forty-three".