7878007867 has 16 divisors (see below), whose sum is σ = 8327232000. Its totient is φ = 7432326720.

The previous prime is 7878007807. The next prime is 7878007877. The reversal of 7878007867 is 7687008787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7878007867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7878007807) 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, 7180863 + ... + 7181959.

It is an arithmetic number, because the mean of its divisors is an integer number (520452000).

Almost surely, 2^7878007867 is an apocalyptic number.

7878007867 is a deficient number, since it is larger than the sum of its proper divisors (449224133).

7878007867 is a wasteful number, since it uses less digits than its factorization.

7878007867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2346.

The product of its (nonzero) digits is 7375872, while the sum is 58.

The square root of 7878007867 is about 88758.1425391496. The cubic root of 7878007867 is about 1989.7818727609.

The spelling of 7878007867 in words is "seven billion, eight hundred seventy-eight million, seven thousand, eight hundred sixty-seven".