20005106716434 has 16 divisors (see below), whose sum is σ = 45725958209088. Its totient is φ = 5715744776112.

The previous prime is 20005106716433. The next prime is 20005106716447. The reversal of 20005106716434 is 43461760150002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20005106716392 and 20005106716401.

It is not an unprimeable number, because it can be changed into a prime (20005106716433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238156032297 + ... + 238156032380.

It is an arithmetic number, because the mean of its divisors is an integer number (2857872388068).

Almost surely, 2^{20005106716434} is an apocalyptic number.

20005106716434 is an abundant number, since it is smaller than the sum of its proper divisors (25720851492654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20005106716434 is a wasteful number, since it uses less digits than its factorization.

20005106716434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476312064689.

The product of its (nonzero) digits is 120960, while the sum is 39.

Adding to 20005106716434 its reverse (43461760150002), we get a palindrome (63466866866436).

The spelling of 20005106716434 in words is "twenty trillion, five billion, one hundred six million, seven hundred sixteen thousand, four hundred thirty-four".