8211551122368 has 84 divisors (see below), whose sum is σ = 25676649457368. Its totient is φ = 2488348823040.

The previous prime is 8211551122289. The next prime is 8211551122429. The reversal of 8211551122368 is 8632211551128.

It is a happy number.

8211551122368 is a `hidden beast` number, since 8 + 2 + 1 + 1 + 551 + 12 + 23 + 68 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 648001171 + ... + 648013842.

It is an arithmetic number, because the mean of its divisors is an integer number (305674398302).

Almost surely, 2^{8211551122368} is an apocalyptic number.

8211551122368 is a gapful number since it is divisible by the number (88) formed by its first and last digit.

It is an amenable number.

8211551122368 is an abundant number, since it is smaller than the sum of its proper divisors (17465098335000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8211551122368 is a wasteful number, since it uses less digits than its factorization.

8211551122368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296015042 (or 1296015029 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The spelling of 8211551122368 in words is "eight trillion, two hundred eleven billion, five hundred fifty-one million, one hundred twenty-two thousand, three hundred sixty-eight".