26656542330 has 128 divisors (see below), whose sum is σ = 71782834176. Its totient is φ = 6278342400.

The previous prime is 26656542301. The next prime is 26656542331. The reversal of 26656542330 is 3324565662.

It is not an unprimeable number, because it can be changed into a prime (26656542331) 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 63 ways as a sum of consecutive naturals, for example, 12099009 + ... + 12101211.

It is an arithmetic number, because the mean of its divisors is an integer number (560803392).

Almost surely, 2^26656542330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26656542330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35891417088).

26656542330 is an abundant number, since it is smaller than the sum of its proper divisors (45126291846).

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

26656542330 is a wasteful number, since it uses less digits than its factorization.

26656542330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252.

The product of its (nonzero) digits is 777600, while the sum is 42.

The spelling of 26656542330 in words is "twenty-six billion, six hundred fifty-six million, five hundred forty-two thousand, three hundred thirty".