4821816561832 has 32 divisors (see below), whose sum is σ = 9287620367400. Its totient is φ = 2345150997504.

The previous prime is 4821816561773. The next prime is 4821816561853. The reversal of 4821816561832 is 2381656181284.

It can be written as a sum of positive squares in 4 ways, for example, as 4418345144196 + 403471417636 = 2101986^2 + 635194^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910053 + ... + 3236020.

Almost surely, 2^{4821816561832} is an apocalyptic number.

It is an amenable number.

4821816561832 is a deficient number, since it is larger than the sum of its proper divisors (4465803805568).

4821816561832 is a wasteful number, since it uses less digits than its factorization.

4821816561832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4150045 (or 4150041 counting only the distinct ones).

The product of its digits is 4423680, while the sum is 55.

The spelling of 4821816561832 in words is "four trillion, eight hundred twenty-one billion, eight hundred sixteen million, five hundred sixty-one thousand, eight hundred thirty-two".