26521489388 has 12 divisors (see below), whose sum is σ = 46708229232. Its totient is φ = 13176281040.

The previous prime is 26521489367. The next prime is 26521489391. The reversal of 26521489388 is 88398412562.

It is a happy number.

It is a super-2 number, since 2×26521489388² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21115208 + ... + 21116463.

It is an arithmetic number, because the mean of its divisors is an integer number (3892352436).

Almost surely, 2^26521489388 is an apocalyptic number.

It is an amenable number.

26521489388 is a deficient number, since it is larger than the sum of its proper divisors (20186739844).

26521489388 is a wasteful number, since it uses less digits than its factorization.

26521489388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42231832 (or 42231830 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 56.

The spelling of 26521489388 in words is "twenty-six billion, five hundred twenty-one million, four hundred eighty-nine thousand, three hundred eighty-eight".