21358060369277 has 2 divisors, whose sum is σ = 21358060369278. Its totient is φ = 21358060369276.

The previous prime is 21358060369259. The next prime is 21358060369381. The reversal of 21358060369277 is 77296306085312.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19542004961956 + 1816055407321 = 4420634^2 + 1347611^2 .

It is a cyclic number.

It is not a de Polignac number, because 21358060369277 - 2¹⁸ = 21358060107133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21358060369207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10679030184638 + 10679030184639.

It is an arithmetic number, because the mean of its divisors is an integer number (10679030184639).

Almost surely, 2^{21358060369277} is an apocalyptic number.

It is an amenable number.

21358060369277 is a deficient number, since it is larger than the sum of its proper divisors (1).

21358060369277 is an equidigital number, since it uses as much as digits as its factorization.

21358060369277 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22861440, while the sum is 59.

The spelling of 21358060369277 in words is "twenty-one trillion, three hundred fifty-eight billion, sixty million, three hundred sixty-nine thousand, two hundred seventy-seven".