20144135215 has 8 divisors (see below), whose sum is σ = 24173727840. Its totient is φ = 16114797792.

The previous prime is 20144135213. The next prime is 20144135233. The reversal of 20144135215 is 51253144102.

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 20144135215 - 2¹ = 20144135213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144135213) 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, 251721 + ... + 321949.

It is an arithmetic number, because the mean of its divisors is an integer number (3021715980).

Almost surely, 2^20144135215 is an apocalyptic number.

20144135215 is a deficient number, since it is larger than the sum of its proper divisors (4029592625).

20144135215 is an equidigital number, since it uses as much as digits as its factorization.

20144135215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127601.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 20144135215 its reverse (51253144102), we get a palindrome (71397279317).

The spelling of 20144135215 in words is "twenty billion, one hundred forty-four million, one hundred thirty-five thousand, two hundred fifteen".