7834078366845 has 16 divisors (see below), whose sum is σ = 12658629601152. Its totient is φ = 4136807057600.

The previous prime is 7834078366843. The next prime is 7834078366883. The reversal of 7834078366845 is 5486638704387.

It is not a de Polignac number, because 7834078366845 - 2¹ = 7834078366843 is a prime.

It is a super-2 number, since 2×7834078366845² (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 7834078366845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7834078366841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2585502897 + ... + 2585505926.

It is an arithmetic number, because the mean of its divisors is an integer number (791164350072).

Almost surely, 2^{7834078366845} is an apocalyptic number.

It is an amenable number.

7834078366845 is a deficient number, since it is larger than the sum of its proper divisors (4824551234307).

7834078366845 is a wasteful number, since it uses less digits than its factorization.

7834078366845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5171008932.

The product of its (nonzero) digits is 650280960, while the sum is 69.

The spelling of 7834078366845 in words is "seven trillion, eight hundred thirty-four billion, seventy-eight million, three hundred sixty-six thousand, eight hundred forty-five".