6468979316 has 6 divisors (see below), whose sum is σ = 11320713810. Its totient is φ = 3234489656.

The previous prime is 6468979261. The next prime is 6468979331. The reversal of 6468979316 is 6139798646.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4310447716 + 2158531600 = 65654^2 + 46460^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 808622411 + ... + 808622418.

It is an arithmetic number, because the mean of its divisors is an integer number (1886785635).

Almost surely, 2^6468979316 is an apocalyptic number.

It is an amenable number.

6468979316 is a deficient number, since it is larger than the sum of its proper divisors (4851734494).

6468979316 is a wasteful number, since it uses less digits than its factorization.

6468979316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617244833 (or 1617244831 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 59.

The square root of 6468979316 is about 80429.9652865771. The cubic root of 6468979316 is about 1863.2819955781.

The spelling of 6468979316 in words is "six billion, four hundred sixty-eight million, nine hundred seventy-nine thousand, three hundred sixteen".