85863500543 has 2 divisors, whose sum is σ = 85863500544. Its totient is φ = 85863500542.

The previous prime is 85863500507. The next prime is 85863500551. The reversal of 85863500543 is 34500536858.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85863500543 - 2⁸ = 85863500287 is a prime.

It is a super-2 number, since 2×85863500543² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85863500563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42931750271 + 42931750272.

It is an arithmetic number, because the mean of its divisors is an integer number (42931750272).

Almost surely, 2^85863500543 is an apocalyptic number.

85863500543 is a deficient number, since it is larger than the sum of its proper divisors (1).

85863500543 is an equidigital number, since it uses as much as digits as its factorization.

85863500543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 85863500543 in words is "eighty-five billion, eight hundred sixty-three million, five hundred thousand, five hundred forty-three".