21563060315532 has 24 divisors (see below), whose sum is σ = 51003037643376. Its totient is φ = 7089225308928.

The previous prime is 21563060315519. The next prime is 21563060315551. The reversal of 21563060315532 is 23551306036512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12307681953 + ... + 12307683704.

It is an arithmetic number, because the mean of its divisors is an integer number (2125126568474).

Almost surely, 2^{21563060315532} is an apocalyptic number.

It is an amenable number.

21563060315532 is an abundant number, since it is smaller than the sum of its proper divisors (29439977327844).

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

21563060315532 is a wasteful number, since it uses less digits than its factorization.

21563060315532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24615365737 (or 24615365735 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 42.

The spelling of 21563060315532 in words is "twenty-one trillion, five hundred sixty-three billion, sixty million, three hundred fifteen thousand, five hundred thirty-two".