20015242465 has 8 divisors (see below), whose sum is σ = 24576856128. Its totient is φ = 15639817200.

The previous prime is 20015242453. The next prime is 20015242517. The reversal of 20015242465 is 56424251002.

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

It is not a de Polignac number, because 20015242465 - 2⁷ = 20015242337 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46546861 + ... + 46547290.

It is an arithmetic number, because the mean of its divisors is an integer number (3072107016).

Almost surely, 2^20015242465 is an apocalyptic number.

It is an amenable number.

20015242465 is a deficient number, since it is larger than the sum of its proper divisors (4561613663).

20015242465 is an equidigital number, since it uses as much as digits as its factorization.

20015242465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93094199.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 20015242465 its reverse (56424251002), we get a palindrome (76439493467).

The spelling of 20015242465 in words is "twenty billion, fifteen million, two hundred forty-two thousand, four hundred sixty-five".