26639948095487 has 4 divisors (see below), whose sum is σ = 26641860113160. Its totient is φ = 26638036077816.

The previous prime is 26639948095483. The next prime is 26639948095507. The reversal of 26639948095487 is 78459084993662.

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 26639948095487 - 2² = 26639948095483 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 (26639948095483) 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, 955987937 + ... + 956015802.

It is an arithmetic number, because the mean of its divisors is an integer number (6660465028290).

Almost surely, 2^{26639948095487} is an apocalyptic number.

26639948095487 is a deficient number, since it is larger than the sum of its proper divisors (1912017673).

26639948095487 is a wasteful number, since it uses less digits than its factorization.

26639948095487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912017672.

The product of its (nonzero) digits is 5643509760, while the sum is 80.

The spelling of 26639948095487 in words is "twenty-six trillion, six hundred thirty-nine billion, nine hundred forty-eight million, ninety-five thousand, four hundred eighty-seven".