7878085105 has 16 divisors (see below), whose sum is σ = 10346745024. Its totient is φ = 5710841280.

The previous prime is 7878085093. The next prime is 7878085109. The reversal of 7878085105 is 5015808787.

It is not a de Polignac number, because 7878085105 - 2¹⁷ = 7877954033 is a prime.

It is a super-2 number, since 2×7878085105² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7878085109) 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, 216402 + ... + 250171.

It is an arithmetic number, because the mean of its divisors is an integer number (646671564).

Almost surely, 2^7878085105 is an apocalyptic number.

It is an amenable number.

7878085105 is a deficient number, since it is larger than the sum of its proper divisors (2468659919).

7878085105 is a wasteful number, since it uses less digits than its factorization.

7878085105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466896.

The product of its (nonzero) digits is 627200, while the sum is 49.

The square root of 7878085105 is about 88758.5776418257. The cubic root of 7878085105 is about 1989.7883755161.

The spelling of 7878085105 in words is "seven billion, eight hundred seventy-eight million, eighty-five thousand, one hundred five".