21006299059379 has 2 divisors, whose sum is σ = 21006299059380. Its totient is φ = 21006299059378.

The previous prime is 21006299059373. The next prime is 21006299059387. The reversal of 21006299059379 is 97395099260012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21006299059379 - 2³⁶ = 20937579582643 is a prime.

It is not a weakly prime, because it can be changed into another prime (21006299059373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10503149529689 + 10503149529690.

It is an arithmetic number, because the mean of its divisors is an integer number (10503149529690).

Almost surely, 2^{21006299059379} is an apocalyptic number.

21006299059379 is a deficient number, since it is larger than the sum of its proper divisors (1).

21006299059379 is an equidigital number, since it uses as much as digits as its factorization.

21006299059379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16533720, while the sum is 62.

The spelling of 21006299059379 in words is "twenty-one trillion, six billion, two hundred ninety-nine million, fifty-nine thousand, three hundred seventy-nine".