63531380780 has 96 divisors (see below), whose sum is σ = 159611461632. Its totient is φ = 20782540800.

The previous prime is 63531380723. The next prime is 63531380789. The reversal of 63531380780 is 8708313536.

63531380780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (63531380789) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205052 + ... + 411228.

It is an arithmetic number, because the mean of its divisors is an integer number (1662619392).

Almost surely, 2^63531380780 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 63531380780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79805730816).

63531380780 is an abundant number, since it is smaller than the sum of its proper divisors (96080080852).

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

63531380780 is a wasteful number, since it uses less digits than its factorization.

63531380780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206295 (or 206293 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 63531380780 in words is "sixty-three billion, five hundred thirty-one million, three hundred eighty thousand, seven hundred eighty".