26403269449 has 32 divisors (see below), whose sum is σ = 28988702496. Its totient is φ = 23946854400.

The previous prime is 26403269423. The next prime is 26403269467. The reversal of 26403269449 is 94496230462.

It can be written as a sum of positive squares in 16 ways, for example, as 3217725625 + 23185543824 = 56725^2 + 152268^2 .

It is a cyclic number.

It is not a de Polignac number, because 26403269449 - 2²¹ = 26401172297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26403264449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37664799 + ... + 37665499.

It is an arithmetic number, because the mean of its divisors is an integer number (905896953).

Almost surely, 2^26403269449 is an apocalyptic number.

It is an amenable number.

26403269449 is a deficient number, since it is larger than the sum of its proper divisors (2585433047).

26403269449 is a wasteful number, since it uses less digits than its factorization.

26403269449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1245.

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 26403269449 in words is "twenty-six billion, four hundred three million, two hundred sixty-nine thousand, four hundred forty-nine".