63845270556 has 12 divisors (see below), whose sum is σ = 148972297992. Its totient is φ = 21281756848.

The previous prime is 63845270513. The next prime is 63845270579. The reversal of 63845270556 is 65507254836.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 63845270499 and 63845270508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2660219595 + ... + 2660219618.

It is an arithmetic number, because the mean of its divisors is an integer number (12414358166).

Almost surely, 2^63845270556 is an apocalyptic number.

It is an amenable number.

63845270556 is an abundant number, since it is smaller than the sum of its proper divisors (85127027436).

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

63845270556 is a wasteful number, since it uses less digits than its factorization.

63845270556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5320439220 (or 5320439218 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 51.

The spelling of 63845270556 in words is "sixty-three billion, eight hundred forty-five million, two hundred seventy thousand, five hundred fifty-six".