27021803228653 has 2 divisors, whose sum is σ = 27021803228654. Its totient is φ = 27021803228652.

The previous prime is 27021803228633. The next prime is 27021803228743. The reversal of 27021803228653 is 35682230812072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27000047568649 + 21755660004 = 5196157^2 + 147498^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27021803228653 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27021803228597 and 27021803228606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27021803228633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13510901614326 + 13510901614327.

It is an arithmetic number, because the mean of its divisors is an integer number (13510901614327).

Almost surely, 2^{27021803228653} is an apocalyptic number.

It is an amenable number.

27021803228653 is a deficient number, since it is larger than the sum of its proper divisors (1).

27021803228653 is an equidigital number, since it uses as much as digits as its factorization.

27021803228653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 27021803228653 in words is "twenty-seven trillion, twenty-one billion, eight hundred three million, two hundred twenty-eight thousand, six hundred fifty-three".