26878051271 has 4 divisors (see below), whose sum is σ = 26977232544. Its totient is φ = 26778870000.

The previous prime is 26878051261. The next prime is 26878051283. The reversal of 26878051271 is 17215087862.

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 26878051271 - 2¹⁰ = 26878050247 is a prime.

It is a super-4 number, since 4×26878051271⁴ (a number of 43 digits) contains 4444 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 (26878051231) 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, 49590230 + ... + 49590771.

It is an arithmetic number, because the mean of its divisors is an integer number (6744308136).

Almost surely, 2^26878051271 is an apocalyptic number.

26878051271 is a deficient number, since it is larger than the sum of its proper divisors (99181273).

26878051271 is an equidigital number, since it uses as much as digits as its factorization.

26878051271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99181272.

The product of its (nonzero) digits is 376320, while the sum is 47.

The spelling of 26878051271 in words is "twenty-six billion, eight hundred seventy-eight million, fifty-one thousand, two hundred seventy-one".