20005106716406 has 16 divisors (see below), whose sum is σ = 36311790342816. Its totient is φ = 8069286742656.

The previous prime is 20005106716393. The next prime is 20005106716433. The reversal of 20005106716406 is 60461760150002.

It is a self number, because there is not a number n which added to its sum of digits gives 20005106716406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42027534881 + ... + 42027535356.

It is an arithmetic number, because the mean of its divisors is an integer number (2269486896426).

Almost surely, 2^{20005106716406} is an apocalyptic number.

20005106716406 is a deficient number, since it is larger than the sum of its proper divisors (16306683626410).

20005106716406 is a wasteful number, since it uses less digits than its factorization.

20005106716406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84055070263.

The product of its (nonzero) digits is 60480, while the sum is 38.

Adding to 20005106716406 its reverse (60461760150002), we get a palindrome (80466866866408).

The spelling of 20005106716406 in words is "twenty trillion, five billion, one hundred six million, seven hundred sixteen thousand, four hundred six".