20017506442005 has 24 divisors (see below), whose sum is σ = 34697953606680. Its totient is φ = 10675713454080.

The previous prime is 20017506441973. The next prime is 20017506442019. The reversal of 20017506442005 is 50024460571002.

It is a happy number.

20017506442005 is a `hidden beast` number, since 2 + 0 + 0 + 1 + 7 + 5 + 0 + 644 + 2 + 0 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1599066469764 + 18418439972241 = 1264542^2 + 4291671^2 .

It is not a de Polignac number, because 20017506442005 - 2⁵ = 20017506441973 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4361016 + ... + 7684625.

It is an arithmetic number, because the mean of its divisors is an integer number (1445748066945).

Almost surely, 2^{20017506442005} is an apocalyptic number.

It is an amenable number.

20017506442005 is a deficient number, since it is larger than the sum of its proper divisors (14680447164675).

20017506442005 is a wasteful number, since it uses less digits than its factorization.

20017506442005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12082581 (or 12082578 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The spelling of 20017506442005 in words is "twenty trillion, seventeen billion, five hundred six million, four hundred forty-two thousand, five".