26690495328 has 480 divisors, whose sum is σ = 95281401600. Its totient is φ = 7159643136.

The previous prime is 26690495327. The next prime is 26690495341. The reversal of 26690495328 is 82359409662.

It is a happy number.

26690495328 is a `hidden beast` number, since 2 + 6 + 69 + 0 + 49 + 532 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26690495323) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 47918026 + ... + 47918582.

It is an arithmetic number, because the mean of its divisors is an integer number (198502920).

Almost surely, 2^26690495328 is an apocalyptic number.

26690495328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26690495328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47640700800).

26690495328 is an abundant number, since it is smaller than the sum of its proper divisors (68590906272).

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

26690495328 is a wasteful number, since it uses less digits than its factorization.

26690495328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 727 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 54.

The spelling of 26690495328 in words is "twenty-six billion, six hundred ninety million, four hundred ninety-five thousand, three hundred twenty-eight".