21078469567583 has 2 divisors, whose sum is σ = 21078469567584. Its totient is φ = 21078469567582.

The previous prime is 21078469567577. The next prime is 21078469567601. The reversal of 21078469567583 is 38576596487012.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21078469567583 - 2²⁰ = 21078468519007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21078469567523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10539234783791 + 10539234783792.

It is an arithmetic number, because the mean of its divisors is an integer number (10539234783792).

It is a 1-persistent number, because it is pandigital, but 2⋅21078469567583 = 42156939135166 is not.

Almost surely, 2^{21078469567583} is an apocalyptic number.

21078469567583 is a deficient number, since it is larger than the sum of its proper divisors (1).

21078469567583 is an equidigital number, since it uses as much as digits as its factorization.

21078469567583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 609638400, while the sum is 71.

The spelling of 21078469567583 in words is "twenty-one trillion, seventy-eight billion, four hundred sixty-nine million, five hundred sixty-seven thousand, five hundred eighty-three".