20102052423 has 8 divisors (see below), whose sum is σ = 27242125936. Its totient is φ = 13181673600.

The previous prime is 20102052353. The next prime is 20102052433. The reversal of 20102052423 is 32425020102.

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

It is not a de Polignac number, because 20102052423 - 2⁸ = 20102052167 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20102052423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102052433) 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, 54923458 + ... + 54923823.

It is an arithmetic number, because the mean of its divisors is an integer number (3405265742).

Almost surely, 2^20102052423 is an apocalyptic number.

20102052423 is a deficient number, since it is larger than the sum of its proper divisors (7140073513).

20102052423 is a wasteful number, since it uses less digits than its factorization.

20102052423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109847345.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 20102052423 its reverse (32425020102), we get a palindrome (52527072525).

The spelling of 20102052423 in words is "twenty billion, one hundred two million, fifty-two thousand, four hundred twenty-three".