63520384356 has 480 divisors, whose sum is σ = 209004364800. Its totient is φ = 16533953280.

The previous prime is 63520384351. The next prime is 63520384387. The reversal of 63520384356 is 65348302536.

63520384356 is a `hidden beast` number, since 6 + 3 + 5 + 203 + 8 + 435 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (63520384351) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 51937561 + ... + 51938783.

It is an arithmetic number, because the mean of its divisors is an integer number (435425760).

Almost surely, 2^63520384356 is an apocalyptic number.

63520384356 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63520384356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104502182400).

63520384356 is an abundant number, since it is smaller than the sum of its proper divisors (145483980444).

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

63520384356 is a wasteful number, since it uses less digits than its factorization.

63520384356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341 (or 1330 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 63520384356 in words is "sixty-three billion, five hundred twenty million, three hundred eighty-four thousand, three hundred fifty-six".