20415104320045 has 4 divisors (see below), whose sum is σ = 24498125184060. Its totient is φ = 16332083456032.

The previous prime is 20415104319979. The next prime is 20415104320099. The reversal of 20415104320045 is 54002340151402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10196104741956 + 10218999578089 = 3193134^2 + 3196717^2 .

It is a cyclic number.

It is not a de Polignac number, because 20415104320045 - 2¹¹ = 20415104317997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20415104319989 and 20415104320016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2041510432000 + ... + 2041510432009.

It is an arithmetic number, because the mean of its divisors is an integer number (6124531296015).

Almost surely, 2^{20415104320045} is an apocalyptic number.

It is an amenable number.

20415104320045 is a deficient number, since it is larger than the sum of its proper divisors (4083020864015).

20415104320045 is an equidigital number, since it uses as much as digits as its factorization.

20415104320045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083020864014.

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

Adding to 20415104320045 its reverse (54002340151402), we get a palindrome (74417444471447).

The spelling of 20415104320045 in words is "twenty trillion, four hundred fifteen billion, one hundred four million, three hundred twenty thousand, forty-five".