8078366878861 has 8 divisors (see below), whose sum is σ = 8199575432064. Its totient is φ = 7957177029120.

The previous prime is 8078366878723. The next prime is 8078366878871. The reversal of 8078366878861 is 1688786638708.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 8078366878861 - 2¹¹ = 8078366876813 is a prime.

It is a super-3 number, since 3×8078366878861³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8078366878871) 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, 3804340 + ... + 5534413.

It is an arithmetic number, because the mean of its divisors is an integer number (1024946929008).

Almost surely, 2^{8078366878861} is an apocalyptic number.

It is an amenable number.

8078366878861 is a deficient number, since it is larger than the sum of its proper divisors (121208553203).

8078366878861 is a wasteful number, since it uses less digits than its factorization.

8078366878861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9351731.

The product of its (nonzero) digits is 1040449536, while the sum is 76.

The spelling of 8078366878861 in words is "eight trillion, seventy-eight billion, three hundred sixty-six million, eight hundred seventy-eight thousand, eight hundred sixty-one".