26656326438 has 96 divisors (see below), whose sum is σ = 65068121088. Its totient is φ = 7249435200.

The previous prime is 26656326409. The next prime is 26656326479. The reversal of 26656326438 is 83462365662.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 531981 + ... + 579927.

It is an arithmetic number, because the mean of its divisors is an integer number (677792928).

Almost surely, 2^26656326438 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26656326438, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32534060544).

26656326438 is an abundant number, since it is smaller than the sum of its proper divisors (38411794650).

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

26656326438 is a wasteful number, since it uses less digits than its factorization.

26656326438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48058 (or 48051 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 51.

The spelling of 26656326438 in words is "twenty-six billion, six hundred fifty-six million, three hundred twenty-six thousand, four hundred thirty-eight".