26550817152 has 128 divisors (see below), whose sum is σ = 73157631360. Its totient is φ = 8525647872.

The previous prime is 26550817133. The next prime is 26550817169. The reversal of 26550817152 is 25171805562.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×26550817152² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1194363 + ... + 1216389.

It is an arithmetic number, because the mean of its divisors is an integer number (571543995).

Almost surely, 2^26550817152 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 26550817152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36578815680).

26550817152 is an abundant number, since it is smaller than the sum of its proper divisors (46606814208).

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

26550817152 is a wasteful number, since it uses less digits than its factorization.

26550817152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22160 (or 22148 counting only the distinct ones).

The product of its (nonzero) digits is 168000, while the sum is 42.

The spelling of 26550817152 in words is "twenty-six billion, five hundred fifty million, eight hundred seventeen thousand, one hundred fifty-two".