63357807816 has 96 divisors (see below), whose sum is σ = 180998126400. Its totient is φ = 19966435200.

The previous prime is 63357807811. The next prime is 63357807817. The reversal of 63357807816 is 61870875336.

63357807816 is a `hidden beast` number, since 63 + 3 + 578 + 0 + 7 + 8 + 1 + 6 = 666.

It is a super-2 number, since 2×63357807816² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (63357807811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 618666 + ... + 713766.

It is an arithmetic number, because the mean of its divisors is an integer number (1885397150).

Almost surely, 2^63357807816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63357807816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90499063200).

63357807816 is an abundant number, since it is smaller than the sum of its proper divisors (117640318584).

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

63357807816 is a wasteful number, since it uses less digits than its factorization.

63357807816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95619 (or 95612 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 63357807816 in words is "sixty-three billion, three hundred fifty-seven million, eight hundred seven thousand, eight hundred sixteen".