7878322976 has 24 divisors (see below), whose sum is σ = 15929652060. Its totient is φ = 3832697088.

The previous prime is 7878322943. The next prime is 7878323003. The reversal of 7878322976 is 6792238787.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7691290000 + 187032976 = 87700^2 + 13676^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3325811 + ... + 3328178.

Almost surely, 2^7878322976 is an apocalyptic number.

It is an amenable number.

7878322976 is an abundant number, since it is smaller than the sum of its proper divisors (8051329084).

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

7878322976 is a wasteful number, since it uses less digits than its factorization.

7878322976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6654036 (or 6654028 counting only the distinct ones).

The product of its digits is 14224896, while the sum is 59.

The square root of 7878322976 is about 88759.9176205116. The cubic root of 7878322976 is about 1989.8084018795.

The spelling of 7878322976 in words is "seven billion, eight hundred seventy-eight million, three hundred twenty-two thousand, nine hundred seventy-six".