20560212434 has 4 divisors (see below), whose sum is σ = 30840318654. Its totient is φ = 10280106216.

The previous prime is 20560212427. The next prime is 20560212451. The reversal of 20560212434 is 43421206502.

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

It can be written as a sum of positive squares in only one way, i.e., 19487322409 + 1072890025 = 139597^2 + 32755^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20560212397 and 20560212406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5140053107 + ... + 5140053110.

Almost surely, 2^20560212434 is an apocalyptic number.

20560212434 is a deficient number, since it is larger than the sum of its proper divisors (10280106220).

20560212434 is a wasteful number, since it uses less digits than its factorization.

20560212434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10280106219.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 20560212434 its reverse (43421206502), we get a palindrome (63981418936).

The spelling of 20560212434 in words is "twenty billion, five hundred sixty million, two hundred twelve thousand, four hundred thirty-four".