26886537216 has 504 divisors, whose sum is σ = 99455289024. Its totient is φ = 6794772480.

The previous prime is 26886537163. The next prime is 26886537229. The reversal of 26886537216 is 61273568862.

26886537216 is a `hidden beast` number, since 2 + 6 + 8 + 86 + 537 + 21 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (504).

Its product of digits (5806080) is a multiple of the sum of its prime divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 726663150 + ... + 726663186.

Almost surely, 2^26886537216 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 26886537216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49727644512).

26886537216 is an abundant number, since it is smaller than the sum of its proper divisors (72568751808).

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

26886537216 is an frugal number, since it uses more digits than its factorization.

26886537216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 60 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 26886537216 in words is "twenty-six billion, eight hundred eighty-six million, five hundred thirty-seven thousand, two hundred sixteen".