26693754138 has 96 divisors (see below), whose sum is σ = 61303357440. Its totient is φ = 8377443360.

The previous prime is 26693754121. The next prime is 26693754163. The reversal of 26693754138 is 83145739662.

26693754138 is a `hidden beast` number, since 2 + 6 + 6 + 93 + 7 + 541 + 3 + 8 = 666.

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, 12525333 + ... + 12527463.

It is an arithmetic number, because the mean of its divisors is an integer number (638576640).

Almost surely, 2^26693754138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26693754138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30651678720).

26693754138 is an abundant number, since it is smaller than the sum of its proper divisors (34609603302).

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

26693754138 is a wasteful number, since it uses less digits than its factorization.

26693754138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624 (or 2621 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 54.

The spelling of 26693754138 in words is "twenty-six billion, six hundred ninety-three million, seven hundred fifty-four thousand, one hundred thirty-eight".