20565936214 has 4 divisors (see below), whose sum is σ = 30848904324. Its totient is φ = 10282968106.

The previous prime is 20565936191. The next prime is 20565936257. The reversal of 20565936214 is 41263956502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41263956502 = 2 ⋅20631978251.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5141484052 + ... + 5141484055.

It is an arithmetic number, because the mean of its divisors is an integer number (7712226081).

Almost surely, 2^20565936214 is an apocalyptic number.

20565936214 is a deficient number, since it is larger than the sum of its proper divisors (10282968110).

20565936214 is a wasteful number, since it uses less digits than its factorization.

20565936214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10282968109.

The product of its (nonzero) digits is 388800, while the sum is 43.

The spelling of 20565936214 in words is "twenty billion, five hundred sixty-five million, nine hundred thirty-six thousand, two hundred fourteen".