8128327657551 has 8 divisors (see below), whose sum is σ = 11089811377920. Its totient is φ = 5292864521112.

The previous prime is 8128327657529. The next prime is 8128327657579. The reversal of 8128327657551 is 1557567238218.

It is a happy number.

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

It is not a de Polignac number, because 8128327657551 - 2¹³ = 8128327649359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8128327657501) 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 7 ways as a sum of consecutive naturals, for example, 31505145831 + ... + 31505146088.

It is an arithmetic number, because the mean of its divisors is an integer number (1386226422240).

Almost surely, 2^{8128327657551} is an apocalyptic number.

8128327657551 is a deficient number, since it is larger than the sum of its proper divisors (2961483720369).

8128327657551 is a wasteful number, since it uses less digits than its factorization.

8128327657551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63010291965.

The product of its digits is 28224000, while the sum is 60.

It can be divided in two parts, 8128327 and 657551, that added together give a palindrome (8785878).

The spelling of 8128327657551 in words is "eight trillion, one hundred twenty-eight billion, three hundred twenty-seven million, six hundred fifty-seven thousand, five hundred fifty-one".