20875263043 has 4 divisors (see below), whose sum is σ = 21034616328. Its totient is φ = 20715909760.

The previous prime is 20875263029. The next prime is 20875263049. The reversal of 20875263043 is 34036257802.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34036257802 = 2 ⋅17018128901.

It is a cyclic number.

It is not a de Polignac number, because 20875263043 - 2²¹ = 20873165891 is a prime.

It is a super-2 number, since 2×20875263043² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20875262987 and 20875263005.

It is not an unprimeable number, because it can be changed into a prime (20875263049) 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, 79676446 + ... + 79676707.

It is an arithmetic number, because the mean of its divisors is an integer number (5258654082).

Almost surely, 2^20875263043 is an apocalyptic number.

20875263043 is a deficient number, since it is larger than the sum of its proper divisors (159353285).

20875263043 is a wasteful number, since it uses less digits than its factorization.

20875263043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159353284.

The product of its (nonzero) digits is 241920, while the sum is 40.

The spelling of 20875263043 in words is "twenty billion, eight hundred seventy-five million, two hundred sixty-three thousand, forty-three".