6661364011 has 4 divisors (see below), whose sum is σ = 6726037552. Its totient is φ = 6596690472.

The previous prime is 6661363991. The next prime is 6661364023. The reversal of 6661364011 is 1104631666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1104631666 = 2 ⋅552315833.

It is a cyclic number.

It is not a de Polignac number, because 6661364011 - 2²³ = 6652975403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6661364051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32336616 + ... + 32336821.

It is an arithmetic number, because the mean of its divisors is an integer number (1681509388).

Almost surely, 2^6661364011 is an apocalyptic number.

6661364011 is a deficient number, since it is larger than the sum of its proper divisors (64673541).

6661364011 is a wasteful number, since it uses less digits than its factorization.

6661364011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64673540.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 6661364011 is about 81617.1796314967. The cubic root of 6661364011 is about 1881.5729263995.

Adding to 6661364011 its reverse (1104631666), we get a palindrome (7765995677).

The spelling of 6661364011 in words is "six billion, six hundred sixty-one million, three hundred sixty-four thousand, eleven".