63845254836 has 384 divisors, whose sum is σ = 190818270720. Its totient is φ = 18289152000.

The previous prime is 63845254787. The next prime is 63845254861.

63845254836 is a `hidden beast` number, since 6 + 3 + 84 + 525 + 4 + 8 + 36 = 666.

63845254836 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

Its product of digits (16588800) is a multiple of the sum of its prime factors (432).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 324087490 + ... + 324087686.

It is an arithmetic number, because the mean of its divisors is an integer number (496922580).

Almost surely, 2^63845254836 is an apocalyptic number.

63845254836 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63845254836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95409135360).

63845254836 is an abundant number, since it is smaller than the sum of its proper divisors (126973015884).

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

63845254836 is a wasteful number, since it uses less digits than its factorization.

63845254836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432 (or 424 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 54.

The spelling of 63845254836 in words is "sixty-three billion, eight hundred forty-five million, two hundred fifty-four thousand, eight hundred thirty-six".