20006510011 has 8 divisors (see below), whose sum is σ = 20036782080. Its totient is φ = 19976261928.

The previous prime is 20006509979. The next prime is 20006510087. The reversal of 20006510011 is 11001560002.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 20006510011 - 2⁵ = 20006509979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20006511011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2264160 + ... + 2272978.

It is an arithmetic number, because the mean of its divisors is an integer number (2504597760).

Almost surely, 2^20006510011 is an apocalyptic number.

20006510011 is a deficient number, since it is larger than the sum of its proper divisors (30272069).

20006510011 is a wasteful number, since it uses less digits than its factorization.

20006510011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11993.

The product of its (nonzero) digits is 60, while the sum is 16.

The spelling of 20006510011 in words is "twenty billion, six million, five hundred ten thousand, eleven".