21113560361316 has 48 divisors (see below), whose sum is σ = 50039557263360. Its totient is φ = 6927519006240.

The previous prime is 21113560361303. The next prime is 21113560361339. The reversal of 21113560361316 is 61316306531112.

It is a super-4 number, since 4×21113560361316⁴ (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

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, 19489716 + ... + 20544491.

It is an arithmetic number, because the mean of its divisors is an integer number (1042490776320).

Almost surely, 2^{21113560361316} is an apocalyptic number.

It is an amenable number.

21113560361316 is an abundant number, since it is smaller than the sum of its proper divisors (28925996902044).

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

21113560361316 is a wasteful number, since it uses less digits than its factorization.

21113560361316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40034904 (or 40034902 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 39.

Adding to 21113560361316 its reverse (61316306531112), we get a palindrome (82429866892428).

The spelling of 21113560361316 in words is "twenty-one trillion, one hundred thirteen billion, five hundred sixty million, three hundred sixty-one thousand, three hundred sixteen".