20430366444 has 18 divisors (see below), whose sum is σ = 51643426380. Its totient is φ = 6810122136.

The previous prime is 20430366433. The next prime is 20430366457. The reversal of 20430366444 is 44466303402.

20430366444 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 0 + 3 + 6 + 644 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×20430366444² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 567510179 = 20430366444 / (2 + 0 + 4 + 3 + 0 + 3 + 6 + 6 + 4 + 4 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 20430366399 and 20430366408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283755054 + ... + 283755125.

Almost surely, 2^20430366444 is an apocalyptic number.

It is an amenable number.

20430366444 is an abundant number, since it is smaller than the sum of its proper divisors (31213059936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20430366444 is a wasteful number, since it uses less digits than its factorization.

20430366444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567510189 (or 567510184 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 36.

Adding to 20430366444 its reverse (44466303402), we get a palindrome (64896669846).

The spelling of 20430366444 in words is "twenty billion, four hundred thirty million, three hundred sixty-six thousand, four hundred forty-four".