21882546029 has 2 divisors, whose sum is σ = 21882546030. Its totient is φ = 21882546028.

The previous prime is 21882546001. The next prime is 21882546067. The reversal of 21882546029 is 92064528812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21796093225 + 86452804 = 147635^2 + 9298^2 .

It is a cyclic number.

It is not a de Polignac number, because 21882546029 - 2¹⁶ = 21882480493 is a prime.

It is a super-2 number, since 2×21882546029² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21882546079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10941273014 + 10941273015.

It is an arithmetic number, because the mean of its divisors is an integer number (10941273015).

Almost surely, 2^21882546029 is an apocalyptic number.

It is an amenable number.

21882546029 is a deficient number, since it is larger than the sum of its proper divisors (1).

21882546029 is an equidigital number, since it uses as much as digits as its factorization.

21882546029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 47.

The spelling of 21882546029 in words is "twenty-one billion, eight hundred eighty-two million, five hundred forty-six thousand, twenty-nine".