858755728356 has 48 divisors (see below), whose sum is σ = 2018604079296. Its totient is φ = 284132253184.

The previous prime is 858755728349. The next prime is 858755728459. The reversal of 858755728356 is 653827557858.

It is a super-2 number, since 2×858755728356² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19684840 + ... + 19728416.

It is an arithmetic number, because the mean of its divisors is an integer number (42054251652).

Almost surely, 2^858755728356 is an apocalyptic number.

It is an amenable number.

858755728356 is an abundant number, since it is smaller than the sum of its proper divisors (1159848350940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

858755728356 is a wasteful number, since it uses less digits than its factorization.

858755728356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55708 (or 55706 counting only the distinct ones).

The product of its digits is 564480000, while the sum is 69.

The spelling of 858755728356 in words is "eight hundred fifty-eight billion, seven hundred fifty-five million, seven hundred twenty-eight thousand, three hundred fifty-six".