85858729443 has 12 divisors (see below), whose sum is σ = 130545436840. Its totient is φ = 54226565856.

The previous prime is 85858729403. The next prime is 85858729469. The reversal of 85858729443 is 34492785858.

85858729443 is a `hidden beast` number, since 8 + 5 + 8 + 587 + 2 + 9 + 4 + 43 = 666.

It is not a de Polignac number, because 85858729443 - 2⁶ = 85858729379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85858729403) 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 11 ways as a sum of consecutive naturals, for example, 251048746 + ... + 251049087.

Almost surely, 2^85858729443 is an apocalyptic number.

85858729443 is a deficient number, since it is larger than the sum of its proper divisors (44686707397).

85858729443 is a wasteful number, since it uses less digits than its factorization.

85858729443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502097858 (or 502097855 counting only the distinct ones).

The product of its digits is 77414400, while the sum is 63.

The spelling of 85858729443 in words is "eighty-five billion, eight hundred fifty-eight million, seven hundred twenty-nine thousand, four hundred forty-three".