21360101540560 has 40 divisors (see below), whose sum is σ = 50403463498656. Its totient is φ = 8416517619840.

The previous prime is 21360101540543. The next prime is 21360101540599. The reversal of 21360101540560 is 6504510106312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×21360101540560² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 1992541426 + ... + 1992552145.

Almost surely, 2^{21360101540560} is an apocalyptic number.

21360101540560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21360101540560 is an abundant number, since it is smaller than the sum of its proper divisors (29043361958096).

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

21360101540560 is a wasteful number, since it uses less digits than its factorization.

21360101540560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985093651 (or 3985093645 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 21360101540560 its reverse (6504510106312), we get a palindrome (27864611646872).

The spelling of 21360101540560 in words is "twenty-one trillion, three hundred sixty billion, one hundred one million, five hundred forty thousand, five hundred sixty".