20424142236513 has 8 divisors (see below), whose sum is σ = 27237239214048. Its totient is φ = 13613570041664.

The previous prime is 20424142236493. The next prime is 20424142236521. The reversal of 20424142236513 is 31563224142402.

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 20424142236513 - 2¹⁷ = 20424142105441 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20424142236413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631176795 + ... + 631209152.

It is an arithmetic number, because the mean of its divisors is an integer number (3404654901756).

Almost surely, 2^{20424142236513} is an apocalyptic number.

It is an amenable number.

20424142236513 is a deficient number, since it is larger than the sum of its proper divisors (6813096977535).

20424142236513 is a wasteful number, since it uses less digits than its factorization.

20424142236513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262391343.

The product of its (nonzero) digits is 276480, while the sum is 39.

Adding to 20424142236513 its reverse (31563224142402), we get a palindrome (51987366378915).

The spelling of 20424142236513 in words is "twenty trillion, four hundred twenty-four billion, one hundred forty-two million, two hundred thirty-six thousand, five hundred thirteen".