26743409505 has 24 divisors (see below), whose sum is σ = 48370690368. Its totient is φ = 13643014176.

The previous prime is 26743409503. The next prime is 26743409519. The reversal of 26743409505 is 50590434762.

26743409505 is a `hidden beast` number, since 2 + 67 + 43 + 40 + 9 + 505 = 666.

It is not a de Polignac number, because 26743409505 - 2¹ = 26743409503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (26743409503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12918487 + ... + 12920556.

It is an arithmetic number, because the mean of its divisors is an integer number (2015445432).

Almost surely, 2^26743409505 is an apocalyptic number.

It is an amenable number.

26743409505 is a deficient number, since it is larger than the sum of its proper divisors (21627280863).

26743409505 is a wasteful number, since it uses less digits than its factorization.

26743409505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25839077 (or 25839074 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 26743409505 in words is "twenty-six billion, seven hundred forty-three million, four hundred nine thousand, five hundred five".