20163834623 has 8 divisors (see below), whose sum is σ = 21358338192. Its totient is φ = 18970263936.

The previous prime is 20163834619. The next prime is 20163834629. The reversal of 20163834623 is 32643836102.

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 20163834623 - 2² = 20163834619 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 (20163834629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188465 + ... + 275402.

It is an arithmetic number, because the mean of its divisors is an integer number (2669792274).

Almost surely, 2^20163834623 is an apocalyptic number.

20163834623 is a deficient number, since it is larger than the sum of its proper divisors (1194503569).

20163834623 is a wasteful number, since it uses less digits than its factorization.

20163834623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466441.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 20163834623 in words is "twenty billion, one hundred sixty-three million, eight hundred thirty-four thousand, six hundred twenty-three".