26490450720 has 48 divisors (see below), whose sum is σ = 83444921280. Its totient is φ = 7064120064.

The previous prime is 26490450703. The next prime is 26490450743. The reversal of 26490450720 is 2705409462.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27593740 + ... + 27594699.

It is an arithmetic number, because the mean of its divisors is an integer number (1738435860).

Almost surely, 2^26490450720 is an apocalyptic number.

26490450720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26490450720 is an abundant number, since it is smaller than the sum of its proper divisors (56954470560).

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

26490450720 is a wasteful number, since it uses less digits than its factorization.

26490450720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55188457 (or 55188449 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The spelling of 26490450720 in words is "twenty-six billion, four hundred ninety million, four hundred fifty thousand, seven hundred twenty".