20806463011 has 2 divisors, whose sum is σ = 20806463012. Its totient is φ = 20806463010.

The previous prime is 20806462961. The next prime is 20806463039. The reversal of 20806463011 is 11036460802.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20806463011 - 2¹⁵ = 20806430243 is a prime.

It is a super-2 number, since 2×20806463011² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20806463071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10403231505 + 10403231506.

It is an arithmetic number, because the mean of its divisors is an integer number (10403231506).

Almost surely, 2^20806463011 is an apocalyptic number.

20806463011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20806463011 is an equidigital number, since it uses as much as digits as its factorization.

20806463011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 20806463011 in words is "twenty billion, eight hundred six million, four hundred sixty-three thousand, eleven".