855315218752 has 14 divisors (see below), whose sum is σ = 1697266137338. Its totient is φ = 427657609344.

The previous prime is 855315218749. The next prime is 855315218753. The reversal of 855315218752 is 257812513558.

It can be written as a sum of positive squares in only one way, i.e., 754785638656 + 100529580096 = 868784^2 + 317064^2 .

It is a super-2 number, since 2×855315218752² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 855315218752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855315218753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6682150083 + ... + 6682150210.

Almost surely, 2^855315218752 is an apocalyptic number.

It is an amenable number.

855315218752 is a deficient number, since it is larger than the sum of its proper divisors (841950918586).

855315218752 is a wasteful number, since it uses less digits than its factorization.

855315218752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13364300305 (or 13364300295 counting only the distinct ones).

The product of its digits is 3360000, while the sum is 52.

The spelling of 855315218752 in words is "eight hundred fifty-five billion, three hundred fifteen million, two hundred eighteen thousand, seven hundred fifty-two".