20423120432115 has 32 divisors (see below), whose sum is σ = 33560676198720. Its totient is φ = 10597778878464.

The previous prime is 20423120432107. The next prime is 20423120432171. The reversal of 20423120432115 is 51123402132402.

It is a happy number.

It is not a de Polignac number, because 20423120432115 - 2³ = 20423120432107 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 40763851 + ... + 41261819.

It is an arithmetic number, because the mean of its divisors is an integer number (1048771131210).

Almost surely, 2^{20423120432115} is an apocalyptic number.

20423120432115 is a deficient number, since it is larger than the sum of its proper divisors (13137555766605).

20423120432115 is a wasteful number, since it uses less digits than its factorization.

20423120432115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571911.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 20423120432115 its reverse (51123402132402), we get a palindrome (71546522564517).

The spelling of 20423120432115 in words is "twenty trillion, four hundred twenty-three billion, one hundred twenty million, four hundred thirty-two thousand, one hundred fifteen".