20404340315 has 8 divisors (see below), whose sum is σ = 24498334320. Its totient is φ = 16314721632.

The previous prime is 20404340291. The next prime is 20404340323. The reversal of 20404340315 is 51304340402.

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 20404340315 - 2¹⁴ = 20404323931 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, 1083560 + ... + 1102229.

It is an arithmetic number, because the mean of its divisors is an integer number (3062291790).

Almost surely, 2^20404340315 is an apocalyptic number.

20404340315 is a deficient number, since it is larger than the sum of its proper divisors (4093994005).

20404340315 is a wasteful number, since it uses less digits than its factorization.

20404340315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187661.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 20404340315 its reverse (51304340402), we get a palindrome (71708680717).

The spelling of 20404340315 in words is "twenty billion, four hundred four million, three hundred forty thousand, three hundred fifteen".