26886140587 has 4 divisors (see below), whose sum is σ = 27022618656. Its totient is φ = 26749662520.

The previous prime is 26886140507. The next prime is 26886140591. The reversal of 26886140587 is 78504168862.

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 26886140587 - 2²⁷ = 26751922859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26886140507) 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, 68238739 + ... + 68239132.

It is an arithmetic number, because the mean of its divisors is an integer number (6755654664).

Almost surely, 2^26886140587 is an apocalyptic number.

26886140587 is a deficient number, since it is larger than the sum of its proper divisors (136478069).

26886140587 is a wasteful number, since it uses less digits than its factorization.

26886140587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136478068.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 26886140587 in words is "twenty-six billion, eight hundred eighty-six million, one hundred forty thousand, five hundred eighty-seven".