26743575556551 has 16 divisors (see below), whose sum is σ = 40752288406784. Its totient is φ = 15281978197824.

The previous prime is 26743575556549. The next prime is 26743575556657. The reversal of 26743575556551 is 15565557534762.

It is not a de Polignac number, because 26743575556551 - 2¹ = 26743575556549 is a prime.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26743575556051) 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, 2590275 + ... + 7758651.

It is an arithmetic number, because the mean of its divisors is an integer number (2547018025424).

Almost surely, 2^{26743575556551} is an apocalyptic number.

26743575556551 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26743575556551 is a deficient number, since it is larger than the sum of its proper divisors (14008712850233).

26743575556551 is a wasteful number, since it uses less digits than its factorization.

26743575556551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5414790.

The product of its digits is 661500000, while the sum is 66.

The spelling of 26743575556551 in words is "twenty-six trillion, seven hundred forty-three billion, five hundred seventy-five million, five hundred fifty-six thousand, five hundred fifty-one".