20435012635 has 4 divisors (see below), whose sum is σ = 24522015168. Its totient is φ = 16348010104.

The previous prime is 20435012621. The next prime is 20435012657. The reversal of 20435012635 is 53621053402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20435012635 - 2¹⁷ = 20434881563 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20435012597 and 20435012606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2043501259 + ... + 2043501268.

It is an arithmetic number, because the mean of its divisors is an integer number (6130503792).

Almost surely, 2^20435012635 is an apocalyptic number.

20435012635 is a deficient number, since it is larger than the sum of its proper divisors (4087002533).

20435012635 is an equidigital number, since it uses as much as digits as its factorization.

20435012635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4087002532.

The product of its (nonzero) digits is 21600, while the sum is 31.

The spelling of 20435012635 in words is "twenty billion, four hundred thirty-five million, twelve thousand, six hundred thirty-five".