7834645754218 has 16 divisors (see below), whose sum is σ = 12458270913480. Its totient is φ = 3682444709376.

The previous prime is 7834645754213. The next prime is 7834645754249. The reversal of 7834645754218 is 8124575464387.

It can be written as a sum of positive squares in 4 ways, for example, as 6464779163649 + 1369866590569 = 2542593^2 + 1170413^2 .

It is a super-2 number, since 2×7834645754218² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7834645754218.

It is not an unprimeable number, because it can be changed into a prime (7834645754213) 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, 138952971 + ... + 139009342.

Almost surely, 2^{7834645754218} is an apocalyptic number.

7834645754218 is a deficient number, since it is larger than the sum of its proper divisors (4623625159262).

7834645754218 is a wasteful number, since it uses less digits than its factorization.

7834645754218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277963161.

The product of its digits is 180633600, while the sum is 64.

The spelling of 7834645754218 in words is "seven trillion, eight hundred thirty-four billion, six hundred forty-five million, seven hundred fifty-four thousand, two hundred eighteen".