63806785320 has 64 divisors (see below), whose sum is σ = 192263699520. Its totient is φ = 16940178944.

The previous prime is 63806785271. The next prime is 63806785327. The reversal of 63806785320 is 2358760836.

It is a self number, because there is not a number n which added to its sum of digits gives 63806785320.

It is not an unprimeable number, because it can be changed into a prime (63806785327) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1143957 + ... + 1198436.

It is an arithmetic number, because the mean of its divisors is an integer number (3004120305).

Almost surely, 2^63806785320 is an apocalyptic number.

63806785320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63806785320 is an abundant number, since it is smaller than the sum of its proper divisors (128456914200).

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

63806785320 is a wasteful number, since it uses less digits than its factorization.

63806785320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2342634 (or 2342630 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 63806785320 in words is "sixty-three billion, eight hundred six million, seven hundred eighty-five thousand, three hundred twenty".