26778809088 has 288 divisors, whose sum is σ = 84216888000. Its totient is φ = 8364294144.

The previous prime is 26778809059. The next prime is 26778809111. The reversal of 26778809088 is 88090887762.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41008570 + ... + 41009222.

It is an arithmetic number, because the mean of its divisors is an integer number (292419750).

Almost surely, 2^26778809088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26778809088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42108444000).

26778809088 is an abundant number, since it is smaller than the sum of its proper divisors (57438078912).

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

26778809088 is a wasteful number, since it uses less digits than its factorization.

26778809088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044 (or 1024 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 63.

The spelling of 26778809088 in words is "twenty-six billion, seven hundred seventy-eight million, eight hundred nine thousand, eighty-eight".