20306505935 has 8 divisors (see below), whose sum is σ = 24495388416. Its totient is φ = 16160150560.

The previous prime is 20306505917. The next prime is 20306505937. The reversal of 20306505935 is 53950560302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-20306505935 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306505937) 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 7 ways as a sum of consecutive naturals, for example, 10630724 + ... + 10632633.

It is an arithmetic number, because the mean of its divisors is an integer number (3061923552).

Almost surely, 2^20306505935 is an apocalyptic number.

20306505935 is a deficient number, since it is larger than the sum of its proper divisors (4188882481).

20306505935 is a wasteful number, since it uses less digits than its factorization.

20306505935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21263553.

The product of its (nonzero) digits is 121500, while the sum is 38.

The spelling of 20306505935 in words is "twenty billion, three hundred six million, five hundred five thousand, nine hundred thirty-five".