20432144241515 has 8 divisors (see below), whose sum is σ = 24654034820688. Its totient is φ = 16255407572640.

The previous prime is 20432144241479. The next prime is 20432144241521. The reversal of 20432144241515 is 51514244123402.

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

It is not a de Polignac number, because 20432144241515 - 2¹⁶ = 20432144175979 is a prime.

It is a Duffinian 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, 11288476577 + ... + 11288478386.

It is an arithmetic number, because the mean of its divisors is an integer number (3081754352586).

Almost surely, 2^{20432144241515} is an apocalyptic number.

20432144241515 is a deficient number, since it is larger than the sum of its proper divisors (4221890579173).

20432144241515 is a wasteful number, since it uses less digits than its factorization.

20432144241515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22576955149.

The product of its (nonzero) digits is 153600, while the sum is 38.

Adding to 20432144241515 its reverse (51514244123402), we get a palindrome (71946388364917).

The spelling of 20432144241515 in words is "twenty trillion, four hundred thirty-two billion, one hundred forty-four million, two hundred forty-one thousand, five hundred fifteen".