21310539948027 has 24 divisors (see below), whose sum is σ = 34663478473728. Its totient is φ = 12498850407600.

The previous prime is 21310539948011. The next prime is 21310539948029. The reversal of 21310539948027 is 72084993501312.

21310539948027 is a `hidden beast` number, since 2 + 1 + 3 + 1 + 0 + 53 + 99 + 480 + 27 = 666.

It is not a de Polignac number, because 21310539948027 - 2⁴ = 21310539948011 is a prime.

It is a super-3 number, since 3×21310539948027³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (21310539948029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3471899823 + ... + 3471905960.

It is an arithmetic number, because the mean of its divisors is an integer number (1444311603072).

Almost surely, 2^{21310539948027} is an apocalyptic number.

21310539948027 is a deficient number, since it is larger than the sum of its proper divisors (13352938525701).

21310539948027 is a wasteful number, since it uses less digits than its factorization.

21310539948027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6943805831 (or 6943805828 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 21310539948027 in words is "twenty-one trillion, three hundred ten billion, five hundred thirty-nine million, nine hundred forty-eight thousand, twenty-seven".