7878787885 has 8 divisors (see below), whose sum is σ = 9865612800. Its totient is φ = 6028985424.

The previous prime is 7878787867. The next prime is 7878787913. The reversal of 7878787885 is 5887878787.

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 7878787885 - 2⁷ = 7878787757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34255485 + ... + 34255714.

It is an arithmetic number, because the mean of its divisors is an integer number (1233201600).

Almost surely, 2^7878787885 is an apocalyptic number.

It is an amenable number.

7878787885 is a deficient number, since it is larger than the sum of its proper divisors (1986824915).

7878787885 is a wasteful number, since it uses less digits than its factorization.

7878787885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68511227.

The product of its digits is 393379840, while the sum is 73.

The square root of 7878787885 is about 88762.5364948524. The cubic root of 7878787885 is about 1989.8475414122.

The spelling of 7878787885 in words is "seven billion, eight hundred seventy-eight million, seven hundred eighty-seven thousand, eight hundred eighty-five".