21164012026583 has 2 divisors, whose sum is σ = 21164012026584. Its totient is φ = 21164012026582.

The previous prime is 21164012026559. The next prime is 21164012026711. The reversal of 21164012026583 is 38562021046112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21164012026583 - 2¹⁸ = 21164011764439 is a prime.

It is a super-2 number, since 2×21164012026583² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21164012026583.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21164012026513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10582006013291 + 10582006013292.

It is an arithmetic number, because the mean of its divisors is an integer number (10582006013292).

Almost surely, 2^{21164012026583} is an apocalyptic number.

21164012026583 is a deficient number, since it is larger than the sum of its proper divisors (1).

21164012026583 is an equidigital number, since it uses as much as digits as its factorization.

21164012026583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 21164012026583 in words is "twenty-one trillion, one hundred sixty-four billion, twelve million, twenty-six thousand, five hundred eighty-three".