26997733152 has 144 divisors (see below), whose sum is σ = 83333053440. Its totient is φ = 8241440256.

The previous prime is 26997733121. The next prime is 26997733187. The reversal of 26997733152 is 25133779962.

It is a tau number, because it is divible by the number of its divisors (144).

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, 447099 + ... + 503877.

It is an arithmetic number, because the mean of its divisors is an integer number (578701760).

Almost surely, 2^26997733152 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 26997733152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41666526720).

26997733152 is an abundant number, since it is smaller than the sum of its proper divisors (56335320288).

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

26997733152 is a wasteful number, since it uses less digits than its factorization.

26997733152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56935 (or 56924 counting only the distinct ones).

The product of its digits is 4286520, while the sum is 54.

The spelling of 26997733152 in words is "twenty-six billion, nine hundred ninety-seven million, seven hundred thirty-three thousand, one hundred fifty-two".