20430235756263 has 8 divisors (see below), whose sum is σ = 28179635526000. Its totient is φ = 13150496578688.

The previous prime is 20430235756241. The next prime is 20430235756291. The reversal of 20430235756263 is 36265753203402.

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 20430235756263 - 2²² = 20430231561959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20430235752263) 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, 117415147938 + ... + 117415148111.

It is an arithmetic number, because the mean of its divisors is an integer number (3522454440750).

Almost surely, 2^{20430235756263} is an apocalyptic number.

20430235756263 is a deficient number, since it is larger than the sum of its proper divisors (7749399769737).

20430235756263 is a wasteful number, since it uses less digits than its factorization.

20430235756263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234830296081.

The product of its (nonzero) digits is 5443200, while the sum is 48.

Adding to 20430235756263 its reverse (36265753203402), we get a palindrome (56695988959665).

The spelling of 20430235756263 in words is "twenty trillion, four hundred thirty billion, two hundred thirty-five million, seven hundred fifty-six thousand, two hundred sixty-three".