26659069818 has 16 divisors (see below), whose sum is σ = 53356764576. Its totient is φ = 8879919120.

The previous prime is 26659069817. The next prime is 26659069823. The reversal of 26659069818 is 81896095662.

It is not an unprimeable number, because it can be changed into a prime (26659069813) 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, 1600396 + ... + 1616967.

It is an arithmetic number, because the mean of its divisors is an integer number (3334797786).

Almost surely, 2^26659069818 is an apocalyptic number.

26659069818 is an abundant number, since it is smaller than the sum of its proper divisors (26697694758).

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

26659069818 is a wasteful number, since it uses less digits than its factorization.

26659069818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3218749.

The product of its (nonzero) digits is 11197440, while the sum is 60.

The spelling of 26659069818 in words is "twenty-six billion, six hundred fifty-nine million, sixty-nine thousand, eight hundred eighteen".