858381385426 has 16 divisors (see below), whose sum is σ = 1357746415200. Its totient is φ = 405879493248.

The previous prime is 858381385409. The next prime is 858381385429. The reversal of 858381385426 is 624583183858.

It is not an unprimeable number, because it can be changed into a prime (858381385429) 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 7 ways as a sum of consecutive naturals, for example, 20039871 + ... + 20082658.

It is an arithmetic number, because the mean of its divisors is an integer number (84859150950).

Almost surely, 2^858381385426 is an apocalyptic number.

858381385426 is a deficient number, since it is larger than the sum of its proper divisors (499365029774).

858381385426 is a wasteful number, since it uses less digits than its factorization.

858381385426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40123113.

The product of its digits is 44236800, while the sum is 61.

The spelling of 858381385426 in words is "eight hundred fifty-eight billion, three hundred eighty-one million, three hundred eighty-five thousand, four hundred twenty-six".