20051609217058 has 16 divisors (see below), whose sum is σ = 30126556985976. Its totient is φ = 10009426698880.

The previous prime is 20051609217019. The next prime is 20051609217071. The reversal of 20051609217058 is 85071290615002.

It can be written as a sum of positive squares in 4 ways, for example, as 12869675529489 + 7181933687569 = 3587433^2 + 2679913^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20051609216999 and 20051609217017.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12061188 + ... + 13622608.

Almost surely, 2^{20051609217058} is an apocalyptic number.

20051609217058 is a deficient number, since it is larger than the sum of its proper divisors (10074947768918).

20051609217058 is a wasteful number, since it uses less digits than its factorization.

20051609217058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571909.

The product of its (nonzero) digits is 302400, while the sum is 46.

The spelling of 20051609217058 in words is "twenty trillion, fifty-one billion, six hundred nine million, two hundred seventeen thousand, fifty-eight".