26012064666 has 32 divisors (see below), whose sum is σ = 59462460288. Its totient is φ = 7431229440.

The previous prime is 26012064653. The next prime is 26012064677. The reversal of 26012064666 is 66646021062.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 451326 + ... + 505686.

It is an arithmetic number, because the mean of its divisors is an integer number (1858201884).

Almost surely, 2^26012064666 is an apocalyptic number.

26012064666 is an abundant number, since it is smaller than the sum of its proper divisors (33450395622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26012064666 is a wasteful number, since it uses less digits than its factorization.

26012064666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65766.

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 26012064666 in words is "twenty-six billion, twelve million, sixty-four thousand, six hundred sixty-six".