20383534357 has 8 divisors (see below), whose sum is σ = 20430948096. Its totient is φ = 20336158752.

The previous prime is 20383534351. The next prime is 20383534411. The reversal of 20383534357 is 75343538302.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20383534357 - 2¹⁹ = 20383010069 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 (20383534351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1248348 + ... + 1264570.

It is an arithmetic number, because the mean of its divisors is an integer number (2553868512).

Almost surely, 2^20383534357 is an apocalyptic number.

It is an amenable number.

20383534357 is a deficient number, since it is larger than the sum of its proper divisors (47413739).

20383534357 is a wasteful number, since it uses less digits than its factorization.

20383534357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19067.

The product of its (nonzero) digits is 907200, while the sum is 43.

The spelling of 20383534357 in words is "twenty billion, three hundred eighty-three million, five hundred thirty-four thousand, three hundred fifty-seven".