26487389687 has 6 divisors (see below), whose sum is σ = 29114238384. Its totient is φ = 24079445060.

The previous prime is 26487389659. The next prime is 26487389693. The reversal of 26487389687 is 78698378462.

It is not a de Polignac number, because 26487389687 - 2⁶ = 26487389623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26487389587) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 109451903 + ... + 109452144.

It is an arithmetic number, because the mean of its divisors is an integer number (4852373064).

Almost surely, 2^26487389687 is an apocalyptic number.

26487389687 is a deficient number, since it is larger than the sum of its proper divisors (2626848697).

26487389687 is a wasteful number, since it uses less digits than its factorization.

26487389687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218904069 (or 218904058 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 68.

The spelling of 26487389687 in words is "twenty-six billion, four hundred eighty-seven million, three hundred eighty-nine thousand, six hundred eighty-seven".