20540222163643 has 16 divisors (see below), whose sum is σ = 25868186772736. Its totient is φ = 15873660059040.

The previous prime is 20540222163631. The next prime is 20540222163647. The reversal of 20540222163643 is 34636122204502.

It is not a de Polignac number, because 20540222163643 - 2³³ = 20531632229051 is a prime.

It is a super-2 number, since 2×20540222163643² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20540222163596 and 20540222163605.

It is not an unprimeable number, because it can be changed into a prime (20540222163647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2624609193 + ... + 2624617018.

It is an arithmetic number, because the mean of its divisors is an integer number (1616761673296).

Almost surely, 2^{20540222163643} is an apocalyptic number.

20540222163643 is a deficient number, since it is larger than the sum of its proper divisors (5327964609093).

20540222163643 is a wasteful number, since it uses less digits than its factorization.

20540222163643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5249226274.

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 20540222163643 in words is "twenty trillion, five hundred forty billion, two hundred twenty-two million, one hundred sixty-three thousand, six hundred forty-three".