21080286053 has 2 divisors, whose sum is σ = 21080286054. Its totient is φ = 21080286052.

The previous prime is 21080286049. The next prime is 21080286061. The reversal of 21080286053 is 35068208012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20841830689 + 238455364 = 144367^2 + 15442^2 .

It is a cyclic number.

It is not a de Polignac number, because 21080286053 - 2² = 21080286049 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21080286043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10540143026 + 10540143027.

It is an arithmetic number, because the mean of its divisors is an integer number (10540143027).

Almost surely, 2^21080286053 is an apocalyptic number.

It is an amenable number.

21080286053 is a deficient number, since it is larger than the sum of its proper divisors (1).

21080286053 is an equidigital number, since it uses as much as digits as its factorization.

21080286053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 21080286053 in words is "twenty-one billion, eighty million, two hundred eighty-six thousand, fifty-three".