8218807015779 has 12 divisors (see below), whose sum is σ = 11871642604536. Its totient is φ = 5479189690752.

The previous prime is 8218807015777. The next prime is 8218807015801. The reversal of 8218807015779 is 9775107088128.

It is not a de Polignac number, because 8218807015779 - 2¹ = 8218807015777 is a prime.

It is a super-2 number, since 2×8218807015779² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8218807015777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2977044 + ... + 5029950.

It is an arithmetic number, because the mean of its divisors is an integer number (989303550378).

Almost surely, 2^{8218807015779} is an apocalyptic number.

8218807015779 is a deficient number, since it is larger than the sum of its proper divisors (3652835588757).

8218807015779 is a wasteful number, since it uses less digits than its factorization.

8218807015779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497746 (or 2497743 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 63.

The spelling of 8218807015779 in words is "eight trillion, two hundred eighteen billion, eight hundred seven million, fifteen thousand, seven hundred seventy-nine".