26881487360 has 640 divisors, whose sum is σ = 86124487680. Its totient is φ = 7811629056.

The previous prime is 26881487357. The next prime is 26881487393. The reversal of 26881487360 is 6378418862.

It is a tau number, because it is divible by the number of its divisors (640).

It is a super-2 number, since 2×26881487360² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 155384234 + ... + 155384406.

It is an arithmetic number, because the mean of its divisors is an integer number (134569512).

Almost surely, 2^26881487360 is an apocalyptic number.

26881487360 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 26881487360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43062243840).

26881487360 is an abundant number, since it is smaller than the sum of its proper divisors (59243000320).

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

26881487360 is a wasteful number, since it uses less digits than its factorization.

26881487360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 26881487360 in words is "twenty-six billion, eight hundred eighty-one million, four hundred eighty-seven thousand, three hundred sixty".