26720446688 has 36 divisors (see below), whose sum is σ = 56963774448. Its totient is φ = 12332511360.

The previous prime is 26720446657. The next prime is 26720446699. The reversal of 26720446688 is 88664402762.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2465048 + ... + 2475863.

It is an arithmetic number, because the mean of its divisors is an integer number (1582327068).

Almost surely, 2^26720446688 is an apocalyptic number.

It is an amenable number.

26720446688 is an abundant number, since it is smaller than the sum of its proper divisors (30243327760).

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

26720446688 is a wasteful number, since it uses less digits than its factorization.

26720446688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4940947 (or 4940926 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 53.

The spelling of 26720446688 in words is "twenty-six billion, seven hundred twenty million, four hundred forty-six thousand, six hundred eighty-eight".