63523212561420 has 48 divisors (see below), whose sum is σ = 177865400482560. Its totient is φ = 16939484748736.

The previous prime is 63523212561313. The next prime is 63523212561439. The reversal of 63523212561420 is 2416521232536.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33683041 + ... + 35518919.

It is an arithmetic number, because the mean of its divisors is an integer number (3705529176720).

Almost surely, 2^{63523212561420} is an apocalyptic number.

63523212561420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63523212561420 is an abundant number, since it is smaller than the sum of its proper divisors (114342187921140).

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

63523212561420 is a wasteful number, since it uses less digits than its factorization.

63523212561420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412574 (or 2412572 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

Adding to 63523212561420 its reverse (2416521232536), we get a palindrome (65939733793956).

The spelling of 63523212561420 in words is "sixty-three trillion, five hundred twenty-three billion, two hundred twelve million, five hundred sixty-one thousand, four hundred twenty".