84434305785 has 32 divisors (see below), whose sum is σ = 136650654720. Its totient is φ = 44513323008.

The previous prime is 84434305771. The next prime is 84434305843. The reversal of 84434305785 is 58750343448.

It is a happy number.

It is not a de Polignac number, because 84434305785 - 2⁶ = 84434305721 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6784929 + ... + 6797361.

It is an arithmetic number, because the mean of its divisors is an integer number (4270332960).

Almost surely, 2^84434305785 is an apocalyptic number.

It is an amenable number.

84434305785 is a deficient number, since it is larger than the sum of its proper divisors (52216348935).

84434305785 is a wasteful number, since it uses less digits than its factorization.

84434305785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17617.

The product of its (nonzero) digits is 6451200, while the sum is 51.

The spelling of 84434305785 in words is "eighty-four billion, four hundred thirty-four million, three hundred five thousand, seven hundred eighty-five".