7878078847 has 8 divisors (see below), whose sum is σ = 8022481920. Its totient is φ = 7734604920.

The previous prime is 7878078829. The next prime is 7878078863. The reversal of 7878078847 is 7488708787.

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 7878078847 - 2²³ = 7869690239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7878076847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215163 + ... + 249100.

It is an arithmetic number, because the mean of its divisors is an integer number (1002810240).

Almost surely, 2^7878078847 is an apocalyptic number.

7878078847 is a deficient number, since it is larger than the sum of its proper divisors (144403073).

7878078847 is a wasteful number, since it uses less digits than its factorization.

7878078847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464573.

The product of its (nonzero) digits is 39337984, while the sum is 64.

The square root of 7878078847 is about 88758.5423888878. The cubic root of 7878078847 is about 1989.7878486495.

The spelling of 7878078847 in words is "seven billion, eight hundred seventy-eight million, seventy-eight thousand, eight hundred forty-seven".