26721491984448 has 28 divisors (see below), whose sum is σ = 70700614209360. Its totient is φ = 8907163994752.

The previous prime is 26721491984443. The next prime is 26721491984477. The reversal of 26721491984448 is 84448919412762.

It is not an unprimeable number, because it can be changed into a prime (26721491984443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69587218518 + ... + 69587218901.

Almost surely, 2^{26721491984448} is an apocalyptic number.

It is an amenable number.

26721491984448 is an abundant number, since it is smaller than the sum of its proper divisors (43979122224912).

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

26721491984448 is a wasteful number, since it uses less digits than its factorization.

26721491984448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139174437434 (or 139174437424 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 69.

The spelling of 26721491984448 in words is "twenty-six trillion, seven hundred twenty-one billion, four hundred ninety-one million, nine hundred eighty-four thousand, four hundred forty-eight".