20112776543 has 4 divisors (see below), whose sum is σ = 20113881240. Its totient is φ = 20111671848.

The previous prime is 20112776539. The next prime is 20112776587. The reversal of 20112776543 is 34567721102.

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 20112776543 - 2² = 20112776539 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20112776497 and 20112776506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112770543) 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, 524573 + ... + 561606.

It is an arithmetic number, because the mean of its divisors is an integer number (5028470310).

Almost surely, 2^20112776543 is an apocalyptic number.

20112776543 is a deficient number, since it is larger than the sum of its proper divisors (1104697).

20112776543 is a wasteful number, since it uses less digits than its factorization.

20112776543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104696.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 20112776543 in words is "twenty billion, one hundred twelve million, seven hundred seventy-six thousand, five hundred forty-three".