26388116587 has 8 divisors (see below), whose sum is σ = 30178058976. Its totient is φ = 22603227072.

The previous prime is 26388116563. The next prime is 26388116603. The reversal of 26388116587 is 78561188362.

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

It is a cyclic number.

It is not a de Polignac number, because 26388116587 - 2⁷ = 26388116459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26388116507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1252018 + ... + 1272919.

It is an arithmetic number, because the mean of its divisors is an integer number (3772257372).

Almost surely, 2^26388116587 is an apocalyptic number.

26388116587 is a deficient number, since it is larger than the sum of its proper divisors (3789942389).

26388116587 is a wasteful number, since it uses less digits than its factorization.

26388116587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526437.

The product of its digits is 3870720, while the sum is 55.

The spelling of 26388116587 in words is "twenty-six billion, three hundred eighty-eight million, one hundred sixteen thousand, five hundred eighty-seven".