7965143816 has 16 divisors (see below), whose sum is σ = 17068165440. Its totient is φ = 3413633040.

The previous prime is 7965143789. The next prime is 7965143831. The reversal of 7965143816 is 6183415697.

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, 71117300 + ... + 71117411.

It is an arithmetic number, because the mean of its divisors is an integer number (1066760340).

Almost surely, 2^7965143816 is an apocalyptic number.

It is an amenable number.

7965143816 is an abundant number, since it is smaller than the sum of its proper divisors (9103021624).

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

7965143816 is a wasteful number, since it uses less digits than its factorization.

7965143816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142234724 (or 142234720 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 50.

The square root of 7965143816 is about 89247.6544005499. The cubic root of 7965143816 is about 1997.0910891701.

The spelling of 7965143816 in words is "seven billion, nine hundred sixty-five million, one hundred forty-three thousand, eight hundred sixteen".