63475521607680 has 3072 divisors, whose sum is σ = 278045913600000. Its totient is φ = 12250252836864.

The previous prime is 63475521607679. The next prime is 63475521607681. The reversal of 63475521607680 is 8670612557436.

63475521607680 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (63475521607679) and next prime (63475521607681).

It is a tau number, because it is divible by the number of its divisors (3072).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63475521607681) by changing a digit.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 2188811089906 + ... + 2188811089934.

It is an arithmetic number, because the mean of its divisors is an integer number (90509737500).

Almost surely, 2^{63475521607680} is an apocalyptic number.

63475521607680 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 63475521607680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139022956800000).

63475521607680 is an abundant number, since it is smaller than the sum of its proper divisors (214570391992320).

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

63475521607680 is an equidigital number, since it uses as much as digits as its factorization.

63475521607680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 78 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 60.

The spelling of 63475521607680 in words is "sixty-three trillion, four hundred seventy-five billion, five hundred twenty-one million, six hundred seven thousand, six hundred eighty".