26740685887 has 8 divisors (see below), whose sum is σ = 26779176000. Its totient is φ = 26702219040.

The previous prime is 26740685869. The next prime is 26740685903. The reversal of 26740685887 is 78858604762.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26740685887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26740685287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4648489 + ... + 4654237.

It is an arithmetic number, because the mean of its divisors is an integer number (3347397000).

Almost surely, 2^26740685887 is an apocalyptic number.

26740685887 is a deficient number, since it is larger than the sum of its proper divisors (38490113).

26740685887 is an equidigital number, since it uses as much as digits as its factorization.

26740685887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11633.

The product of its (nonzero) digits is 36126720, while the sum is 61.

The spelling of 26740685887 in words is "twenty-six billion, seven hundred forty million, six hundred eighty-five thousand, eight hundred eighty-seven".