26066646642 has 16 divisors (see below), whose sum is σ = 52138823040. Its totient is φ = 8687960592.

The previous prime is 26066646587. The next prime is 26066646647. The reversal of 26066646642 is 24664666062.

It is a super-3 number, since 3×26066646642³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26066646591 and 26066646600.

It is not an unprimeable number, because it can be changed into a prime (26066646647) 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, 167818 + ... + 283365.

It is an arithmetic number, because the mean of its divisors is an integer number (3258676440).

Almost surely, 2^26066646642 is an apocalyptic number.

26066646642 is an abundant number, since it is smaller than the sum of its proper divisors (26072176398).

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

26066646642 is a wasteful number, since it uses less digits than its factorization.

26066646642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460817.

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 26066646642 in words is "twenty-six billion, sixty-six million, six hundred forty-six thousand, six hundred forty-two".