26981712544 has 36 divisors (see below), whose sum is σ = 54889141482. Its totient is φ = 13055652480.

The previous prime is 26981712539. The next prime is 26981712553. The reversal of 26981712544 is 44521718962.

It can be written as a sum of positive squares in only one way, i.e., 15530144400 + 11451568144 = 124620^2 + 107012^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 407947 + ... + 469450.

Almost surely, 2^26981712544 is an apocalyptic number.

It is an amenable number.

26981712544 is an abundant number, since it is smaller than the sum of its proper divisors (27907428938).

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

26981712544 is an equidigital number, since it uses as much as digits as its factorization.

26981712544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 877469 (or 877430 counting only the distinct ones).

The product of its digits is 967680, while the sum is 49.

The spelling of 26981712544 in words is "twenty-six billion, nine hundred eighty-one million, seven hundred twelve thousand, five hundred forty-four".