852861425856 has 168 divisors, whose sum is σ = 2626219436400. Its totient is φ = 243240222720.

The previous prime is 852861425837. The next prime is 852861425887. The reversal of 852861425856 is 658524168258.

It is a super-2 number, since 2×852861425856² (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 852861425856.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 684781 + ... + 1474668.

It is an arithmetic number, because the mean of its divisors is an integer number (15632258550).

Almost surely, 2^852861425856 is an apocalyptic number.

It is an amenable number.

852861425856 is an abundant number, since it is smaller than the sum of its proper divisors (1773358010544).

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

852861425856 is a wasteful number, since it uses less digits than its factorization.

852861425856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159503 (or 2159482 counting only the distinct ones).

The product of its digits is 36864000, while the sum is 60.

The spelling of 852861425856 in words is "eight hundred fifty-two billion, eight hundred sixty-one million, four hundred twenty-five thousand, eight hundred fifty-six".