20663776011 has 8 divisors (see below), whose sum is σ = 27553686160. Its totient is φ = 13774858272.

The previous prime is 20663776009. The next prime is 20663776013. The reversal of 20663776011 is 11067736602.

It is an interprime number because it is at equal distance from previous prime (20663776009) and next prime (20663776013).

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

It is not a de Polignac number, because 20663776011 - 2¹ = 20663776009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20663776013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198076 + ... + 283833.

It is an arithmetic number, because the mean of its divisors is an integer number (3444210770).

Almost surely, 2^20663776011 is an apocalyptic number.

20663776011 is a deficient number, since it is larger than the sum of its proper divisors (6889910149).

20663776011 is a wasteful number, since it uses less digits than its factorization.

20663776011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496205.

The product of its (nonzero) digits is 63504, while the sum is 39.

The spelling of 20663776011 in words is "twenty billion, six hundred sixty-three million, seven hundred seventy-six thousand, eleven".