20167763543 has 2 divisors, whose sum is σ = 20167763544. Its totient is φ = 20167763542.

The previous prime is 20167763531. The next prime is 20167763657. The reversal of 20167763543 is 34536776102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20167763543 - 2¹⁸ = 20167501399 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20167763494 and 20167763503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20167763513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10083881771 + 10083881772.

It is an arithmetic number, because the mean of its divisors is an integer number (10083881772).

Almost surely, 2^20167763543 is an apocalyptic number.

20167763543 is a deficient number, since it is larger than the sum of its proper divisors (1).

20167763543 is an equidigital number, since it uses as much as digits as its factorization.

20167763543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 44.

The spelling of 20167763543 in words is "twenty billion, one hundred sixty-seven million, seven hundred sixty-three thousand, five hundred forty-three".