20635358313 has 16 divisors (see below), whose sum is σ = 27616482176. Its totient is φ = 13705666560.

The previous prime is 20635358309. The next prime is 20635358327. The reversal of 20635358313 is 31385353602.

It is not a de Polignac number, because 20635358313 - 2² = 20635358309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20635358113) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 884073 + ... + 907113.

It is an arithmetic number, because the mean of its divisors is an integer number (1726030136).

Almost surely, 2^20635358313 is an apocalyptic number.

It is an amenable number.

20635358313 is a deficient number, since it is larger than the sum of its proper divisors (6981123863).

20635358313 is a wasteful number, since it uses less digits than its factorization.

20635358313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24144.

The product of its (nonzero) digits is 194400, while the sum is 39.

The spelling of 20635358313 in words is "twenty billion, six hundred thirty-five million, three hundred fifty-eight thousand, three hundred thirteen".