6457616216 has 16 divisors (see below), whose sum is σ = 12435275040. Its totient is φ = 3141542880.

The previous prime is 6457616159. The next prime is 6457616227. The reversal of 6457616216 is 6126167546.

It is a Smith number, since the sum of its digits (44) 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, 10907840 + ... + 10908431.

It is an arithmetic number, because the mean of its divisors is an integer number (777204690).

Almost surely, 2^6457616216 is an apocalyptic number.

It is an amenable number.

6457616216 is a deficient number, since it is larger than the sum of its proper divisors (5977658824).

6457616216 is a wasteful number, since it uses less digits than its factorization.

6457616216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21816314 (or 21816310 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 6457616216 is about 80359.2945215424. The cubic root of 6457616216 is about 1862.1903721199.

The spelling of 6457616216 in words is "six billion, four hundred fifty-seven million, six hundred sixteen thousand, two hundred sixteen".