20559052843 has 12 divisors (see below), whose sum is σ = 24687106752. Its totient is φ = 17053590960.

The previous prime is 20559052837. The next prime is 20559052859. The reversal of 20559052843 is 34825095502.

It is not a de Polignac number, because 20559052843 - 2¹⁷ = 20558921771 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20559052843.

It is not an unprimeable number, because it can be changed into a prime (20559052043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6765780 + ... + 6768817.

It is an arithmetic number, because the mean of its divisors is an integer number (2057258896).

Almost surely, 2^20559052843 is an apocalyptic number.

20559052843 is a deficient number, since it is larger than the sum of its proper divisors (4128053909).

20559052843 is a wasteful number, since it uses less digits than its factorization.

20559052843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13534642 (or 13534635 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 20559052843 in words is "twenty billion, five hundred fifty-nine million, fifty-two thousand, eight hundred forty-three".