20388353834 has 8 divisors (see below), whose sum is σ = 30584056800. Its totient is φ = 10193668236.

The previous prime is 20388353801. The next prime is 20388353893. The reversal of 20388353834 is 43835388302.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202094 + ... + 285689.

It is an arithmetic number, because the mean of its divisors is an integer number (3823007100).

Almost surely, 2^20388353834 is an apocalyptic number.

20388353834 is a deficient number, since it is larger than the sum of its proper divisors (10195702966).

20388353834 is a wasteful number, since it uses less digits than its factorization.

20388353834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508684.

The product of its (nonzero) digits is 1658880, while the sum is 47.

The spelling of 20388353834 in words is "twenty billion, three hundred eighty-eight million, three hundred fifty-three thousand, eight hundred thirty-four".