7665878112 has 24 divisors (see below), whose sum is σ = 20122930296. Its totient is φ = 2555292672.

The previous prime is 7665878107. The next prime is 7665878131. The reversal of 7665878112 is 2118785667.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

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, 39926353 + ... + 39926544.

It is an arithmetic number, because the mean of its divisors is an integer number (838455429).

Almost surely, 2^7665878112 is an apocalyptic number.

It is an amenable number.

7665878112 is an abundant number, since it is smaller than the sum of its proper divisors (12457052184).

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

7665878112 is a wasteful number, since it uses less digits than its factorization.

7665878112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79852910 (or 79852902 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 51.

The square root of 7665878112 is about 87555.0004968306. Note that the first 3 decimals coincide. The cubic root of 7665878112 is about 1971.7596268475.

The spelling of 7665878112 in words is "seven billion, six hundred sixty-five million, eight hundred seventy-eight thousand, one hundred twelve".