21316622546027 has 4 divisors (see below), whose sum is σ = 22051678495920. Its totient is φ = 20581566596136.

The previous prime is 21316622545979. The next prime is 21316622546033. The reversal of 21316622546027 is 72064522661312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21316622546027 - 2²² = 21316618351723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21316622546047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367527974903 + ... + 367527974960.

It is an arithmetic number, because the mean of its divisors is an integer number (5512919623980).

Almost surely, 2^{21316622546027} is an apocalyptic number.

21316622546027 is a deficient number, since it is larger than the sum of its proper divisors (735055949893).

21316622546027 is an equidigital number, since it uses as much as digits as its factorization.

21316622546027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735055949892.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 21316622546027 in words is "twenty-one trillion, three hundred sixteen billion, six hundred twenty-two million, five hundred forty-six thousand, twenty-seven".