20346414566 has 4 divisors (see below), whose sum is σ = 30519621852. Its totient is φ = 10173207282.

The previous prime is 20346414563. The next prime is 20346414577. The reversal of 20346414566 is 66541464302.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20346414563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5086603640 + ... + 5086603643.

It is an arithmetic number, because the mean of its divisors is an integer number (7629905463).

Almost surely, 2^20346414566 is an apocalyptic number.

20346414566 is a deficient number, since it is larger than the sum of its proper divisors (10173207286).

20346414566 is a wasteful number, since it uses less digits than its factorization.

20346414566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10173207285.

The product of its (nonzero) digits is 414720, while the sum is 41.

Adding to 20346414566 its reverse (66541464302), we get a palindrome (86887878868).

The spelling of 20346414566 in words is "twenty billion, three hundred forty-six million, four hundred fourteen thousand, five hundred sixty-six".