26773978340 has 12 divisors (see below), whose sum is σ = 56225354556. Its totient is φ = 10709591328.

The previous prime is 26773978331. The next prime is 26773978397. The reversal of 26773978340 is 4387937762.

It can be written as a sum of positive squares in 2 ways, for example, as 3396791524 + 23377186816 = 58282^2 + 152896^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 669349439 + ... + 669349478.

It is an arithmetic number, because the mean of its divisors is an integer number (4685446213).

Almost surely, 2^26773978340 is an apocalyptic number.

26773978340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26773978340 is an abundant number, since it is smaller than the sum of its proper divisors (29451376216).

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

26773978340 is a wasteful number, since it uses less digits than its factorization.

26773978340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338698926 (or 1338698924 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 56.

The spelling of 26773978340 in words is "twenty-six billion, seven hundred seventy-three million, nine hundred seventy-eight thousand, three hundred forty".