26490418720 has 24 divisors (see below), whose sum is σ = 62583614604. Its totient is φ = 10596167424.

The previous prime is 26490418711. The next prime is 26490418723. The reversal of 26490418720 is 2781409462.

It can be written as a sum of positive squares in 2 ways, for example, as 24972848784 + 1517569936 = 158028^2 + 38956^2 .

It is not an unprimeable number, because it can be changed into a prime (26490418723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82782399 + ... + 82782718.

Almost surely, 2^26490418720 is an apocalyptic number.

26490418720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26490418720 is an abundant number, since it is smaller than the sum of its proper divisors (36093195884).

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

26490418720 is a wasteful number, since it uses less digits than its factorization.

26490418720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165565132 (or 165565124 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 26490418720 in words is "twenty-six billion, four hundred ninety million, four hundred eighteen thousand, seven hundred twenty".