821485524204 has 18 divisors (see below), whose sum is σ = 2076532852940. Its totient is φ = 273828508056.

The previous prime is 821485524173. The next prime is 821485524217. The reversal of 821485524204 is 402425584128.

It is a happy number.

821485524204 is a `hidden beast` number, since 8 + 21 + 4 + 85 + 524 + 20 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 821485524204.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11409521134 + ... + 11409521205.

Almost surely, 2^821485524204 is an apocalyptic number.

It is an amenable number.

821485524204 is an abundant number, since it is smaller than the sum of its proper divisors (1255047328736).

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

821485524204 is a wasteful number, since it uses less digits than its factorization.

821485524204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22819042349 (or 22819042344 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 45.

The spelling of 821485524204 in words is "eight hundred twenty-one billion, four hundred eighty-five million, five hundred twenty-four thousand, two hundred four".