20011010994 has 96 divisors (see below), whose sum is σ = 47353662720. Its totient is φ = 6070351104.

The previous prime is 20011010989. The next prime is 20011011001. The reversal of 20011010994 is 49901011002.

It is a super-2 number, since 2×20011010994² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13963702 + ... + 13965134.

It is an arithmetic number, because the mean of its divisors is an integer number (493267320).

Almost surely, 2^20011010994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20011010994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23676831360).

20011010994 is an abundant number, since it is smaller than the sum of its proper divisors (27342651726).

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

20011010994 is a wasteful number, since it uses less digits than its factorization.

20011010994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256 (or 2253 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

Adding to 20011010994 its reverse (49901011002), we get a palindrome (69912021996).

The spelling of 20011010994 in words is "twenty billion, eleven million, ten thousand, nine hundred ninety-four".