855684201024 has 63 divisors (see below), whose sum is σ = 2452727899843. Its totient is φ = 285220666752.

The previous prime is 855684201019. The next prime is 855684201049. The reversal of 855684201024 is 420102486558.

The square root of 855684201024 is 925032.

It is a perfect power (a square), and thus also a powerful number.

855684201024 is a `hidden beast` number, since 8 + 556 + 84 + 2 + 0 + 10 + 2 + 4 = 666.

It is a super-4 number, since 4×855684201024⁴ (a number of 49 digits) contains 4444 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22181497 + ... + 22220039.

Almost surely, 2^855684201024 is an apocalyptic number.

855684201024 is the 925032-nd square number.

It is an amenable number.

855684201024 is an abundant number, since it is smaller than the sum of its proper divisors (1597043698819).

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

855684201024 is an frugal number, since it uses more digits than its factorization.

855684201024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77104 (or 38548 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 855684201024 in words is "eight hundred fifty-five billion, six hundred eighty-four million, two hundred one thousand, twenty-four".