20423633632402 has 128 divisors (see below), whose sum is σ = 42925533880320. Its totient is φ = 7025115018240.

The previous prime is 20423633632289. The next prime is 20423633632403.

20423633632402 is nontrivially palindromic in base 10.

It is a super-3 number, since 3×20423633632402³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20423633632403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 734834218 + ... + 734862010.

It is an arithmetic number, because the mean of its divisors is an integer number (335355733440).

Almost surely, 2^{20423633632402} is an apocalyptic number.

20423633632402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20423633632402 is an abundant number, since it is smaller than the sum of its proper divisors (22501900247918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20423633632402 is a wasteful number, since it uses less digits than its factorization.

20423633632402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43808.

The product of its (nonzero) digits is 746496, while the sum is 40.

It can be divided in two parts, 2042363 and 3632402, that added together give a palindrome (5674765).

The spelling of 20423633632402 in words is "twenty trillion, four hundred twenty-three billion, six hundred thirty-three million, six hundred thirty-two thousand, four hundred two".