8387126657797 has 4 divisors (see below), whose sum is σ = 8405086244256. Its totient is φ = 8369167071340.

The previous prime is 8387126657747. The next prime is 8387126657821. The reversal of 8387126657797 is 7977566217838.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8387126657797 - 2⁷ = 8387126657669 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 (8387126657747) 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, 8979792529 + ... + 8979793462.

It is an arithmetic number, because the mean of its divisors is an integer number (2101271561064).

Almost surely, 2^{8387126657797} is an apocalyptic number.

It is an amenable number.

8387126657797 is a deficient number, since it is larger than the sum of its proper divisors (17959586459).

8387126657797 is a wasteful number, since it uses less digits than its factorization.

8387126657797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17959586458.

The product of its digits is 1493614080, while the sum is 76.

The spelling of 8387126657797 in words is "eight trillion, three hundred eighty-seven billion, one hundred twenty-six million, six hundred fifty-seven thousand, seven hundred ninety-seven".