858344971388 has 6 divisors (see below), whose sum is σ = 1502103699936. Its totient is φ = 429172485692.

The previous prime is 858344971387. The next prime is 858344971397. The reversal of 858344971388 is 883179443858.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858344971387) 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 as a sum of consecutive naturals, namely, 107293121420 + ... + 107293121427.

It is an arithmetic number, because the mean of its divisors is an integer number (250350616656).

Almost surely, 2^858344971388 is an apocalyptic number.

It is an amenable number.

858344971388 is a deficient number, since it is larger than the sum of its proper divisors (643758728548).

858344971388 is a wasteful number, since it uses less digits than its factorization.

858344971388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214586242851 (or 214586242849 counting only the distinct ones).

The product of its digits is 185794560, while the sum is 68.

The spelling of 858344971388 in words is "eight hundred fifty-eight billion, three hundred forty-four million, nine hundred seventy-one thousand, three hundred eighty-eight".