21560027053 has 16 divisors (see below), whose sum is σ = 21926736000. Its totient is φ = 21196889280.

The previous prime is 21560027051. The next prime is 21560027057. The reversal of 21560027053 is 35072006512.

It is a cyclic number.

It is not a de Polignac number, because 21560027053 - 2¹ = 21560027051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21560027051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11061123 + ... + 11063071.

It is an arithmetic number, because the mean of its divisors is an integer number (1370421000).

Almost surely, 2^21560027053 is an apocalyptic number.

It is an amenable number.

21560027053 is a deficient number, since it is larger than the sum of its proper divisors (366708947).

21560027053 is a wasteful number, since it uses less digits than its factorization.

21560027053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772.

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 21560027053 in words is "twenty-one billion, five hundred sixty million, twenty-seven thousand, fifty-three".