26440698770704 has 15 divisors (see below), whose sum is σ = 51228893719173. Its totient is φ = 13220339101248.

The previous prime is 26440698770701. The next prime is 26440698770711. The reversal of 26440698770704 is 40707789604462.

The square root of 26440698770704 is 5142052.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4773088867600 + 21667609903104 = 2184740^2 + 4654848^2 .

It is a super-2 number, since 2×26440698770704² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26440698770701) 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 2 ways as a sum of consecutive naturals, for example, 19925452 + ... + 21210964.

Almost surely, 2^{26440698770704} is an apocalyptic number.

26440698770704 is the 5142052-nd square number.

It is an amenable number.

26440698770704 is a deficient number, since it is larger than the sum of its proper divisors (24788194948469).

26440698770704 is an frugal number, since it uses more digits than its factorization.

26440698770704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571034 (or 1285515 counting only the distinct ones).

The product of its (nonzero) digits is 113799168, while the sum is 64.

The spelling of 26440698770704 in words is "twenty-six trillion, four hundred forty billion, six hundred ninety-eight million, seven hundred seventy thousand, seven hundred four".