26655231642 has 128 divisors (see below), whose sum is σ = 61158924288. Its totient is φ = 7685280000.

The previous prime is 26655231623. The next prime is 26655231649. The reversal of 26655231642 is 24613255662.

It is a junction number, because it is equal to n+sod(n) for n = 26655231594 and 26655231603.

It is not an unprimeable number, because it can be changed into a prime (26655231649) 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 63 ways as a sum of consecutive naturals, for example, 22455373 + ... + 22456559.

It is an arithmetic number, because the mean of its divisors is an integer number (477804096).

Almost surely, 2^26655231642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26655231642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30579462144).

26655231642 is an abundant number, since it is smaller than the sum of its proper divisors (34503692646).

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

26655231642 is a wasteful number, since it uses less digits than its factorization.

26655231642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524.

The product of its digits is 518400, while the sum is 42.

The spelling of 26655231642 in words is "twenty-six billion, six hundred fifty-five million, two hundred thirty-one thousand, six hundred forty-two".