26078486487 has 4 divisors (see below), whose sum is σ = 34771315320. Its totient is φ = 17385657656.

The previous prime is 26078486477. The next prime is 26078486503. The reversal of 26078486487 is 78468487062.

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 26078486487 - 2⁴ = 26078486471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26078486487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26078486477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4346414412 + ... + 4346414417.

It is an arithmetic number, because the mean of its divisors is an integer number (8692828830).

Almost surely, 2^26078486487 is an apocalyptic number.

26078486487 is a deficient number, since it is larger than the sum of its proper divisors (8692828833).

26078486487 is an equidigital number, since it uses as much as digits as its factorization.

26078486487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8692828832.

The product of its (nonzero) digits is 28901376, while the sum is 60.

The spelling of 26078486487 in words is "twenty-six billion, seventy-eight million, four hundred eighty-six thousand, four hundred eighty-seven".