6408775390 has 16 divisors (see below), whose sum is σ = 11907918720. Its totient is φ = 2480816160.

The previous prime is 6408775357. The next prime is 6408775393. The reversal of 6408775390 is 935778046.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6408775393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10336425 + ... + 10337044.

It is an arithmetic number, because the mean of its divisors is an integer number (744244920).

Almost surely, 2^6408775390 is an apocalyptic number.

6408775390 is a deficient number, since it is larger than the sum of its proper divisors (5499143330).

6408775390 is a wasteful number, since it uses less digits than its factorization.

6408775390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20673507.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 6408775390 is about 80054.8273997265. The cubic root of 6408775390 is about 1857.4837240679.

The spelling of 6408775390 in words is "six billion, four hundred eight million, seven hundred seventy-five thousand, three hundred ninety".