7878330865 has 16 divisors (see below), whose sum is σ = 9612884736. Its totient is φ = 6196824000.

The previous prime is 7878330841. The next prime is 7878330869. The reversal of 7878330865 is 5680338787.

It is not a de Polignac number, because 7878330865 - 2⁵ = 7878330833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7878330869) 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 15 ways as a sum of consecutive naturals, for example, 1199340 + ... + 1205890.

It is an arithmetic number, because the mean of its divisors is an integer number (600805296).

Almost surely, 2^7878330865 is an apocalyptic number.

It is an amenable number.

7878330865 is a deficient number, since it is larger than the sum of its proper divisors (1734553871).

7878330865 is a wasteful number, since it uses less digits than its factorization.

7878330865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10560.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The square root of 7878330865 is about 88759.9620606048. The cubic root of 7878330865 is about 1989.8090660477.

The spelling of 7878330865 in words is "seven billion, eight hundred seventy-eight million, three hundred thirty thousand, eight hundred sixty-five".