26747305749 has 6 divisors (see below), whose sum is σ = 38634997206. Its totient is φ = 17831537160.

The previous prime is 26747305747. The next prime is 26747305787. The reversal of 26747305749 is 94750374762.

26747305749 is a `hidden beast` number, since 2 + 67 + 4 + 7 + 3 + 0 + 574 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26746967025 + 338724 = 163545^2 + 582^2 .

It is not a de Polignac number, because 26747305749 - 2¹ = 26747305747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26747305695 and 26747305704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26747305747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1485961422 + ... + 1485961439.

It is an arithmetic number, because the mean of its divisors is an integer number (6439166201).

Almost surely, 2^26747305749 is an apocalyptic number.

It is an amenable number.

26747305749 is a deficient number, since it is larger than the sum of its proper divisors (11887691457).

26747305749 is a wasteful number, since it uses less digits than its factorization.

26747305749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971922867 (or 2971922864 counting only the distinct ones).

The product of its (nonzero) digits is 8890560, while the sum is 54.

The spelling of 26747305749 in words is "twenty-six billion, seven hundred forty-seven million, three hundred five thousand, seven hundred forty-nine".