26680254128788 has 24 divisors (see below), whose sum is σ = 50363511812712. Its totient is φ = 12294005627904.

The previous prime is 26680254128729. The next prime is 26680254128819. The reversal of 26680254128788 is 88782145208662.

It can be written as a sum of positive squares in 4 ways, for example, as 107486933904 + 26572767194884 = 327852^2 + 5154878^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415755445 + ... + 415819612.

It is an arithmetic number, because the mean of its divisors is an integer number (2098479658863).

Almost surely, 2^{26680254128788} is an apocalyptic number.

It is an amenable number.

26680254128788 is a deficient number, since it is larger than the sum of its proper divisors (23683257683924).

26680254128788 is a wasteful number, since it uses less digits than its factorization.

26680254128788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831575691 (or 831575689 counting only the distinct ones).

The product of its (nonzero) digits is 165150720, while the sum is 67.

The spelling of 26680254128788 in words is "twenty-six trillion, six hundred eighty billion, two hundred fifty-four million, one hundred twenty-eight thousand, seven hundred eighty-eight".