20415051340466 has 32 divisors (see below), whose sum is σ = 31340217600000. Its totient is φ = 9969234565392.

The previous prime is 20415051340379. The next prime is 20415051340477. The reversal of 20415051340466 is 66404315051402.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580631795 + ... + 580666953.

It is an arithmetic number, because the mean of its divisors is an integer number (979381800000).

Almost surely, 2^{20415051340466} is an apocalyptic number.

20415051340466 is a deficient number, since it is larger than the sum of its proper divisors (10925166259534).

20415051340466 is a wasteful number, since it uses less digits than its factorization.

20415051340466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48086.

The product of its (nonzero) digits is 345600, while the sum is 41.

Adding to 20415051340466 its reverse (66404315051402), we get a palindrome (86819366391868).

The spelling of 20415051340466 in words is "twenty trillion, four hundred fifteen billion, fifty-one million, three hundred forty thousand, four hundred sixty-six".