63764378491360 has 96 divisors (see below), whose sum is σ = 151079667842880. Its totient is φ = 25431885692928.

The previous prime is 63764378491309. The next prime is 63764378491361. The reversal of 63764378491360 is 6319487346736.

63764378491360 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63764378491361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1327764309 + ... + 1327812331.

It is an arithmetic number, because the mean of its divisors is an integer number (1573746540030).

Almost surely, 2^{63764378491360} 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 63764378491360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75539833921440).

63764378491360 is an abundant number, since it is smaller than the sum of its proper divisors (87315289351520).

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

63764378491360 is a wasteful number, since it uses less digits than its factorization.

63764378491360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71900 (or 71892 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 67.

The spelling of 63764378491360 in words is "sixty-three trillion, seven hundred sixty-four billion, three hundred seventy-eight million, four hundred ninety-one thousand, three hundred sixty".