26505771000 has 256 divisors, whose sum is σ = 88216128000. Its totient is φ = 6602803200.

The previous prime is 26505770989. The next prime is 26505771013. The reversal of 26505771000 is 17750562.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7087131 + ... + 7090869.

It is an arithmetic number, because the mean of its divisors is an integer number (344594250).

Almost surely, 2^26505771000 is an apocalyptic number.

26505771000 is a gapful number since it is divisible by the number (20) 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 26505771000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44108064000).

26505771000 is an abundant number, since it is smaller than the sum of its proper divisors (61710357000).

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

26505771000 is a wasteful number, since it uses less digits than its factorization.

26505771000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3919 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 33.

The spelling of 26505771000 in words is "twenty-six billion, five hundred five million, seven hundred seventy-one thousand".