26194563066 has 64 divisors (see below), whose sum is σ = 63478195200. Its totient is φ = 7039218816.

The previous prime is 26194563023. The next prime is 26194563071. The reversal of 26194563066 is 66036549162.

It is a happy number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 7155 + ... + 228998.

It is an arithmetic number, because the mean of its divisors is an integer number (991846800).

Almost surely, 2^26194563066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26194563066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31739097600).

26194563066 is an abundant number, since it is smaller than the sum of its proper divisors (37283632134).

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

26194563066 is a wasteful number, since it uses less digits than its factorization.

26194563066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236323.

The product of its (nonzero) digits is 1399680, while the sum is 48.

The spelling of 26194563066 in words is "twenty-six billion, one hundred ninety-four million, five hundred sixty-three thousand, sixty-six".