6405253216 has 24 divisors (see below), whose sum is σ = 12687716664. Its totient is φ = 3182976000.

The previous prime is 6405253207. The next prime is 6405253223. The reversal of 6405253216 is 6123525046.

It is a super-2 number, since 2×6405253216² = 82054537522156685312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 608785 + ... + 619216.

It is an arithmetic number, because the mean of its divisors is an integer number (528654861).

Almost surely, 2^6405253216 is an apocalyptic number.

It is an amenable number.

6405253216 is a deficient number, since it is larger than the sum of its proper divisors (6282463448).

6405253216 is a wasteful number, since it uses less digits than its factorization.

6405253216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1228174 (or 1228166 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 6405253216 is about 80032.8258653910. The cubic root of 6405253216 is about 1857.1433792864.

The spelling of 6405253216 in words is "six billion, four hundred five million, two hundred fifty-three thousand, two hundred sixteen".