7947351768 has 64 divisors (see below), whose sum is σ = 21424233600. Its totient is φ = 2448472320.

The previous prime is 7947351761. The next prime is 7947351803. The reversal of 7947351768 is 8671537497.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7947351761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193846 + ... + 231237.

It is an arithmetic number, because the mean of its divisors is an integer number (334753650).

Almost surely, 2^7947351768 is an apocalyptic number.

It is an amenable number.

7947351768 is an abundant number, since it is smaller than the sum of its proper divisors (13476881832).

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

7947351768 is a wasteful number, since it uses less digits than its factorization.

7947351768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425152 (or 425148 counting only the distinct ones).

The product of its digits is 8890560, while the sum is 57.

The square root of 7947351768 is about 89147.9207160773. The cubic root of 7947351768 is about 1995.6029875583.

The spelling of 7947351768 in words is "seven billion, nine hundred forty-seven million, three hundred fifty-one thousand, seven hundred sixty-eight".