26428168387 has 4 divisors (see below), whose sum is σ = 26463359776. Its totient is φ = 26392977000.

The previous prime is 26428168369. The next prime is 26428168441. The reversal of 26428168387 is 78386182462.

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 26428168387 - 2⁷ = 26428168259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26428168357) 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, 17594568 + ... + 17596069.

It is an arithmetic number, because the mean of its divisors is an integer number (6615839944).

Almost surely, 2^26428168387 is an apocalyptic number.

26428168387 is a deficient number, since it is larger than the sum of its proper divisors (35191389).

26428168387 is an equidigital number, since it uses as much as digits as its factorization.

26428168387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35191388.

The product of its digits is 6193152, while the sum is 55.

The spelling of 26428168387 in words is "twenty-six billion, four hundred twenty-eight million, one hundred sixty-eight thousand, three hundred eighty-seven".