26394247369 has 16 divisors (see below), whose sum is σ = 32048409600. Its totient is φ = 21253143744.

The previous prime is 26394247349. The next prime is 26394247381. The reversal of 26394247369 is 96374249362.

It is not a de Polignac number, because 26394247369 - 2¹⁷ = 26394116297 is a prime.

It is a super-2 number, since 2×26394247369² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26394247349) 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 15 ways as a sum of consecutive naturals, for example, 1749529 + ... + 1764550.

It is an arithmetic number, because the mean of its divisors is an integer number (2003025600).

Almost surely, 2^26394247369 is an apocalyptic number.

26394247369 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

26394247369 is a deficient number, since it is larger than the sum of its proper divisors (5654162231).

26394247369 is a wasteful number, since it uses less digits than its factorization.

26394247369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3514152.

The product of its digits is 11757312, while the sum is 55.

The spelling of 26394247369 in words is "twenty-six billion, three hundred ninety-four million, two hundred forty-seven thousand, three hundred sixty-nine".