21513503343532 has 12 divisors (see below), whose sum is σ = 37650853832760. Its totient is φ = 10756116534176.

The previous prime is 21513503343517. The next prime is 21513503343551. The reversal of 21513503343532 is 23534330531512.

It is a super-2 number, since 2×21513503343532² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158708182 + ... + 158843677.

It is an arithmetic number, because the mean of its divisors is an integer number (3137571152730).

Almost surely, 2^{21513503343532} is an apocalyptic number.

It is an amenable number.

21513503343532 is a deficient number, since it is larger than the sum of its proper divisors (16137350489228).

21513503343532 is a wasteful number, since it uses less digits than its factorization.

21513503343532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317568800 (or 317568798 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 40.

The spelling of 21513503343532 in words is "twenty-one trillion, five hundred thirteen billion, five hundred three million, three hundred forty-three thousand, five hundred thirty-two".