26261800726651 has 16 divisors (see below), whose sum is σ = 30370965120000. Its totient is φ = 22242343451328.

The previous prime is 26261800726649. The next prime is 26261800726663. The reversal of 26261800726651 is 15662700816262.

It is not a de Polignac number, because 26261800726651 - 2¹ = 26261800726649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26261800726151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13126755 + ... + 14994508.

It is an arithmetic number, because the mean of its divisors is an integer number (1898185320000).

Almost surely, 2^{26261800726651} is an apocalyptic number.

26261800726651 is a deficient number, since it is larger than the sum of its proper divisors (4109164393349).

26261800726651 is a wasteful number, since it uses less digits than its factorization.

26261800726651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28122858.

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 26261800726651 in words is "twenty-six trillion, two hundred sixty-one billion, eight hundred million, seven hundred twenty-six thousand, six hundred fifty-one".