26490000000 has 256 divisors, whose sum is σ = 88054462080. Its totient is φ = 7056000000.

The previous prime is 26489999993. The next prime is 26490000037. The reversal of 26490000000 is 9462.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29999559 + ... + 30000441.

Almost surely, 2^26490000000 is an apocalyptic number.

26490000000 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 26490000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44027231040).

26490000000 is an abundant number, since it is smaller than the sum of its proper divisors (61564462080).

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

26490000000 is an frugal number, since it uses more digits than its factorization.

26490000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 26490000000 its reverse (9462), we get a palindrome (26490009462).

The spelling of 26490000000 in words is "twenty-six billion, four hundred ninety million", and thus it is an aban number.