20423201113015 has 8 divisors (see below), whose sum is σ = 25105593563568. Its totient is φ = 15940059405120.

The previous prime is 20423201112991. The next prime is 20423201113037. The reversal of 20423201113015 is 51031110232402.

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

It is a de Polignac number, because none of the positive numbers 2^k-20423201113015 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 49812685437 + ... + 49812685846.

It is an arithmetic number, because the mean of its divisors is an integer number (3138199195446).

Almost surely, 2^{20423201113015} is an apocalyptic number.

20423201113015 is a deficient number, since it is larger than the sum of its proper divisors (4682392450553).

20423201113015 is an equidigital number, since it uses as much as digits as its factorization.

20423201113015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99625371329.

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 20423201113015 its reverse (51031110232402), we get a palindrome (71454311345417).

The spelling of 20423201113015 in words is "twenty trillion, four hundred twenty-three billion, two hundred one million, one hundred thirteen thousand, fifteen".