84863705893 has 2 divisors, whose sum is σ = 84863705894. Its totient is φ = 84863705892.

The previous prime is 84863705837. The next prime is 84863705921. The reversal of 84863705893 is 39850736848.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66242920129 + 18620785764 = 257377^2 + 136458^2 .

It is a cyclic number.

It is not a de Polignac number, because 84863705893 - 2¹⁷ = 84863574821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84863705093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42431852946 + 42431852947.

It is an arithmetic number, because the mean of its divisors is an integer number (42431852947).

Almost surely, 2^84863705893 is an apocalyptic number.

It is an amenable number.

84863705893 is a deficient number, since it is larger than the sum of its proper divisors (1).

84863705893 is an equidigital number, since it uses as much as digits as its factorization.

84863705893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 84863705893 in words is "eighty-four billion, eight hundred sixty-three million, seven hundred five thousand, eight hundred ninety-three".