26306544720 has 80 divisors (see below), whose sum is σ = 81964396800. Its totient is φ = 6979456512.

The previous prime is 26306544713. The next prime is 26306544721. The reversal of 26306544720 is 2744560362.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26306544721) 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 15 ways as a sum of consecutive naturals, for example, 230920 + ... + 325479.

It is an arithmetic number, because the mean of its divisors is an integer number (1024554960).

Almost surely, 2^26306544720 is an apocalyptic number.

26306544720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26306544720 is an abundant number, since it is smaller than the sum of its proper divisors (55657852080).

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

26306544720 is a wasteful number, since it uses less digits than its factorization.

26306544720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556612 (or 556606 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 39.

The spelling of 26306544720 in words is "twenty-six billion, three hundred six million, five hundred forty-four thousand, seven hundred twenty".