7871378568 has 32 divisors (see below), whose sum is σ = 19689350400. Its totient is φ = 2622339008.

The previous prime is 7871378561. The next prime is 7871378569. The reversal of 7871378568 is 8658731787.

It is not an unprimeable number, because it can be changed into a prime (7871378561) 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, 46203 + ... + 133706.

It is an arithmetic number, because the mean of its divisors is an integer number (615292200).

Almost surely, 2^7871378568 is an apocalyptic number.

It is an amenable number.

7871378568 is an abundant number, since it is smaller than the sum of its proper divisors (11817971832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7871378568 is a wasteful number, since it uses less digits than its factorization.

7871378568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181741 (or 181737 counting only the distinct ones).

The product of its digits is 15805440, while the sum is 60.

The square root of 7871378568 is about 88720.7899423805. The cubic root of 7871378568 is about 1989.2235860745.

The spelling of 7871378568 in words is "seven billion, eight hundred seventy-one million, three hundred seventy-eight thousand, five hundred sixty-eight".