26209107243 has 48 divisors (see below), whose sum is σ = 43560840960. Its totient is φ = 15017832000.

The previous prime is 26209107217. The next prime is 26209107257. The reversal of 26209107243 is 34270190262.

26209107243 is a `hidden beast` number, since 2 + 620 + 9 + 1 + 0 + 7 + 24 + 3 = 666.

It is not a de Polignac number, because 26209107243 - 2¹² = 26209103147 is a prime.

It is a super-2 number, since 2×26209107243² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26209107198 and 26209107207.

It is not an unprimeable number, because it can be changed into a prime (26209107293) 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 47 ways as a sum of consecutive naturals, for example, 932293 + ... + 959993.

It is an arithmetic number, because the mean of its divisors is an integer number (907517520).

Almost surely, 2^26209107243 is an apocalyptic number.

26209107243 is a deficient number, since it is larger than the sum of its proper divisors (17351733717).

26209107243 is a wasteful number, since it uses less digits than its factorization.

26209107243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28240 (or 28237 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The spelling of 26209107243 in words is "twenty-six billion, two hundred nine million, one hundred seven thousand, two hundred forty-three".