63620536320 has 960 divisors, whose sum is σ = 262572710400. Its totient is φ = 14571601920.

The previous prime is 63620536303. The next prime is 63620536333. The reversal of 63620536320 is 2363502636.

63620536320 is a `hidden beast` number, since 6 + 3 + 620 + 5 + 3 + 6 + 3 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 173352777 + ... + 173353143.

It is an arithmetic number, because the mean of its divisors is an integer number (273513240).

Almost surely, 2^63620536320 is an apocalyptic number.

63620536320 is a gapful number since it is divisible by the number (60) 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 63620536320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131286355200).

63620536320 is an abundant number, since it is smaller than the sum of its proper divisors (198952174080).

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

63620536320 is a wasteful number, since it uses less digits than its factorization.

63620536320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 36.

The spelling of 63620536320 in words is "sixty-three billion, six hundred twenty million, five hundred thirty-six thousand, three hundred twenty".