6475940778 has 32 divisors (see below), whose sum is σ = 13322695680. Its totient is φ = 2097506160.

The previous prime is 6475940761. The next prime is 6475940813. The reversal of 6475940778 is 8770495746.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43408 + ... + 121803.

It is an arithmetic number, because the mean of its divisors is an integer number (416334240).

Almost surely, 2^6475940778 is an apocalyptic number.

6475940778 is an abundant number, since it is smaller than the sum of its proper divisors (6846754902).

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

6475940778 is a wasteful number, since it uses less digits than its factorization.

6475940778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165402.

The product of its (nonzero) digits is 11854080, while the sum is 57.

The square root of 6475940778 is about 80473.2301948915. The cubic root of 6475940778 is about 1863.9501337839.

The spelling of 6475940778 in words is "six billion, four hundred seventy-five million, nine hundred forty thousand, seven hundred seventy-eight".