26555220480 has 160 divisors (see below), whose sum is σ = 85172655744. Its totient is φ = 7058128896.

The previous prime is 26555220479. The next prime is 26555220491. The reversal of 26555220480 is 8402255562.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×26555220480² (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 15 ways as a sum of consecutive naturals, for example, 2398317 + ... + 2409363.

Almost surely, 2^26555220480 is an apocalyptic number.

26555220480 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 26555220480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42586327872).

26555220480 is an abundant number, since it is smaller than the sum of its proper divisors (58617435264).

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

26555220480 is a wasteful number, since it uses less digits than its factorization.

26555220480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11386 (or 11370 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 39.

The spelling of 26555220480 in words is "twenty-six billion, five hundred fifty-five million, two hundred twenty thousand, four hundred eighty".