63758803968 has 220 divisors, whose sum is σ = 191044946092. Its totient is φ = 21180579840.

The previous prime is 63758803967. The next prime is 63758803991. The reversal of 63758803968 is 86930885736.

It can be written as a sum of positive squares in 2 ways, for example, as 27518828544 + 36239975424 = 165888^2 + 190368^2 .

It is not an unprimeable number, because it can be changed into a prime (63758803961) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 27950988 + ... + 27953268.

Almost surely, 2^63758803968 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 63758803968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95522473046).

63758803968 is an abundant number, since it is smaller than the sum of its proper divisors (127286142124).

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

63758803968 is a wasteful number, since it uses less digits than its factorization.

63758803968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 63758803968 in words is "sixty-three billion, seven hundred fifty-eight million, eight hundred three thousand, nine hundred sixty-eight".