20145414111505 has 8 divisors (see below), whose sum is σ = 24446120495400. Its totient is φ = 15935248914816.

The previous prime is 20145414111497. The next prime is 20145414111569. The reversal of 20145414111505 is 50511141454102.

It can be written as a sum of positive squares in 4 ways, for example, as 2314244157696 + 17831169953809 = 1521264^2 + 4222697^2 .

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 20145414111505 - 2³ = 20145414111497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22635296310 + ... + 22635297199.

It is an arithmetic number, because the mean of its divisors is an integer number (3055765061925).

Almost surely, 2^{20145414111505} is an apocalyptic number.

It is an amenable number.

20145414111505 is a deficient number, since it is larger than the sum of its proper divisors (4300706383895).

20145414111505 is an equidigital number, since it uses as much as digits as its factorization.

20145414111505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45270593603.

The product of its (nonzero) digits is 16000, while the sum is 34.

Adding to 20145414111505 its reverse (50511141454102), we get a palindrome (70656555565607).

The spelling of 20145414111505 in words is "twenty trillion, one hundred forty-five billion, four hundred fourteen million, one hundred eleven thousand, five hundred five".