855163581238 has 8 divisors (see below), whose sum is σ = 1300317226488. Its totient is φ = 421724505744.

The previous prime is 855163581229. The next prime is 855163581271. The reversal of 855163581238 is 832185361558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×855163581238² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2928642256 + ... + 2928642547.

It is an arithmetic number, because the mean of its divisors is an integer number (162539653311).

Almost surely, 2^855163581238 is an apocalyptic number.

855163581238 is a deficient number, since it is larger than the sum of its proper divisors (445153645250).

855163581238 is a wasteful number, since it uses less digits than its factorization.

855163581238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5857284878.

The product of its digits is 6912000, while the sum is 55.

The spelling of 855163581238 in words is "eight hundred fifty-five billion, one hundred sixty-three million, five hundred eighty-one thousand, two hundred thirty-eight".