20001010985 has 8 divisors (see below), whose sum is σ = 24126875136. Its totient is φ = 15917034160.

The previous prime is 20001010951. The next prime is 20001010999. The reversal of 20001010985 is 58901010002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20001010985 - 2⁶ = 20001010921 is a prime.

It is a Duffinian number.

It is a Curzon 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, 10470779 + ... + 10472688.

It is an arithmetic number, because the mean of its divisors is an integer number (3015859392).

Almost surely, 2^20001010985 is an apocalyptic number.

It is an amenable number.

20001010985 is a deficient number, since it is larger than the sum of its proper divisors (4125864151).

20001010985 is a wasteful number, since it uses less digits than its factorization.

20001010985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20943663.

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 20001010985 its reverse (58901010002), we get a palindrome (78902020987).

The spelling of 20001010985 in words is "twenty billion, one million, ten thousand, nine hundred eighty-five".