20435016256 has 28 divisors (see below), whose sum is σ = 40565588668. Its totient is φ = 10213765632.

The previous prime is 20435016247. The next prime is 20435016293. The reversal of 20435016256 is 65261053402.

It can be written as a sum of positive squares in 2 ways, for example, as 17045913600 + 3389102656 = 130560^2 + 58216^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121930 + ... + 236086.

Almost surely, 2^20435016256 is an apocalyptic number.

It is an amenable number.

20435016256 is a deficient number, since it is larger than the sum of its proper divisors (20130572412).

20435016256 is a wasteful number, since it uses less digits than its factorization.

20435016256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116966 (or 116956 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 20435016256 its reverse (65261053402), we get a palindrome (85696069658).

The spelling of 20435016256 in words is "twenty billion, four hundred thirty-five million, sixteen thousand, two hundred fifty-six".