26113140509 has 8 divisors (see below), whose sum is σ = 27035468760. Its totient is φ = 25192270656.

The previous prime is 26113140503. The next prime is 26113140517. The reversal of 26113140509 is 90504131162.

It can be written as a sum of positive squares in 4 ways, for example, as 16287374884 + 9825765625 = 127622^2 + 99125^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26113140509 - 2²⁰ = 26112091933 is a prime.

It is a super-2 number, since 2×26113140509² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26113140503) 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 7 ways as a sum of consecutive naturals, for example, 328094 + ... + 399839.

It is an arithmetic number, because the mean of its divisors is an integer number (3379433595).

Almost surely, 2^26113140509 is an apocalyptic number.

26113140509 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

26113140509 is a deficient number, since it is larger than the sum of its proper divisors (922328251).

26113140509 is a wasteful number, since it uses less digits than its factorization.

26113140509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729199.

The product of its (nonzero) digits is 6480, while the sum is 32.

The spelling of 26113140509 in words is "twenty-six billion, one hundred thirteen million, one hundred forty thousand, five hundred nine".