6468778316 has 96 divisors (see below), whose sum is σ = 15510028800. Its totient is φ = 2326363200.

The previous prime is 6468778291. The next prime is 6468778331. The reversal of 6468778316 is 6138778646.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179711 + ... + 212681.

It is an arithmetic number, because the mean of its divisors is an integer number (161562800).

Almost surely, 2^6468778316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6468778316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7755014400).

6468778316 is an abundant number, since it is smaller than the sum of its proper divisors (9041250484).

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

6468778316 is a wasteful number, since it uses less digits than its factorization.

6468778316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33020 (or 33004 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 56.

The square root of 6468778316 is about 80428.7157425754. The cubic root of 6468778316 is about 1863.2626971416.

The spelling of 6468778316 in words is "six billion, four hundred sixty-eight million, seven hundred seventy-eight thousand, three hundred sixteen".