20466583829 has 4 divisors (see below), whose sum is σ = 20466870060. Its totient is φ = 20466297600.

The previous prime is 20466583793. The next prime is 20466583831. The reversal of 20466583829 is 92838566402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 92838566402 = 2 ⋅46419283201.

It can be written as a sum of positive squares in 2 ways, for example, as 11924203204 + 8542380625 = 109198^2 + 92425^2 .

It is a cyclic number.

It is not a de Polignac number, because 20466583829 - 2²⁴ = 20449806613 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20466583889) 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 in 3 ways as a sum of consecutive naturals, for example, 65687 + ... + 212715.

It is an arithmetic number, because the mean of its divisors is an integer number (5116717515).

Almost surely, 2^20466583829 is an apocalyptic number.

It is an amenable number.

20466583829 is a deficient number, since it is larger than the sum of its proper divisors (286231).

20466583829 is a wasteful number, since it uses less digits than its factorization.

20466583829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286230.

The product of its (nonzero) digits is 4976640, while the sum is 53.

The spelling of 20466583829 in words is "twenty billion, four hundred sixty-six million, five hundred eighty-three thousand, eight hundred twenty-nine".