844012488520 has 32 divisors (see below), whose sum is σ = 1904038761600. Its totient is φ = 336714211008.

The previous prime is 844012488479. The next prime is 844012488547. The reversal of 844012488520 is 25884210448.

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 7 ways as a sum of consecutive naturals, for example, 27821664 + ... + 27851983.

It is an arithmetic number, because the mean of its divisors is an integer number (59501211300).

Almost surely, 2^844012488520 is an apocalyptic number.

It is an amenable number.

844012488520 is an abundant number, since it is smaller than the sum of its proper divisors (1060026273080).

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

844012488520 is a wasteful number, since it uses less digits than its factorization.

844012488520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55674037 (or 55674033 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 46.

Adding to 844012488520 its reverse (25884210448), we get a palindrome (869896698968).

The spelling of 844012488520 in words is "eight hundred forty-four billion, twelve million, four hundred eighty-eight thousand, five hundred twenty".