26516271427 has 4 divisors (see below), whose sum is σ = 27911864680. Its totient is φ = 25120678176.

The previous prime is 26516271391. The next prime is 26516271437. The reversal of 26516271427 is 72417261562.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26516271427 is a prime.

It is a super-2 number, since 2×26516271427² (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 (26516271437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697796598 + ... + 697796635.

It is an arithmetic number, because the mean of its divisors is an integer number (6977966170).

Almost surely, 2^26516271427 is an apocalyptic number.

26516271427 is a deficient number, since it is larger than the sum of its proper divisors (1395593253).

26516271427 is a wasteful number, since it uses less digits than its factorization.

26516271427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1395593252.

The product of its digits is 282240, while the sum is 43.

The spelling of 26516271427 in words is "twenty-six billion, five hundred sixteen million, two hundred seventy-one thousand, four hundred twenty-seven".