26873296720 has 40 divisors (see below), whose sum is σ = 66155736744. Its totient is φ = 10117005312.

The previous prime is 26873296717. The next prime is 26873296721. The reversal of 26873296720 is 2769237862.

It can be written as a sum of positive squares in 4 ways, for example, as 8966574864 + 17906721856 = 94692^2 + 133816^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26873296721) 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 7 ways as a sum of consecutive naturals, for example, 9878529 + ... + 9881248.

Almost surely, 2^26873296720 is an apocalyptic number.

26873296720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26873296720 is an abundant number, since it is smaller than the sum of its proper divisors (39282440024).

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

26873296720 is a wasteful number, since it uses less digits than its factorization.

26873296720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19759807 (or 19759801 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 26873296720 in words is "twenty-six billion, eight hundred seventy-three million, two hundred ninety-six thousand, seven hundred twenty".