26001543847 has 4 divisors (see below), whose sum is σ = 26442248040. Its totient is φ = 25560839656.

The previous prime is 26001543823. The next prime is 26001543863. The reversal of 26001543847 is 74834510062.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26001543847 - 2¹⁵ = 26001511079 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26001540847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220352008 + ... + 220352125.

It is an arithmetic number, because the mean of its divisors is an integer number (6610562010).

Almost surely, 2^26001543847 is an apocalyptic number.

26001543847 is a deficient number, since it is larger than the sum of its proper divisors (440704193).

26001543847 is an equidigital number, since it uses as much as digits as its factorization.

26001543847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440704192.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 26001543847 in words is "twenty-six billion, one million, five hundred forty-three thousand, eight hundred forty-seven".