26660626011 has 20 divisors (see below), whose sum is σ = 40797747144. Its totient is φ = 17340242400.

The previous prime is 26660626009. The next prime is 26660626021. The reversal of 26660626011 is 11062606662.

It is a happy number.

It is not a de Polignac number, because 26660626011 - 2¹ = 26660626009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26660626021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4010625 + ... + 4017266.

Almost surely, 2^26660626011 is an apocalyptic number.

26660626011 is a deficient number, since it is larger than the sum of its proper divisors (14137121133).

26660626011 is an equidigital number, since it uses as much as digits as its factorization.

26660626011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8027944 (or 8027935 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 26660626011 in words is "twenty-six billion, six hundred sixty million, six hundred twenty-six thousand, eleven".