6416721472 has 56 divisors (see below), whose sum is σ = 14559970880. Its totient is φ = 2748556800.

The previous prime is 6416721433. The next prime is 6416721497. The reversal of 6416721472 is 2741276146.

It is a tau number, because it is divible by the number of its divisors (56).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476679 + ... + 1481017.

It is an arithmetic number, because the mean of its divisors is an integer number (259999480).

Almost surely, 2^6416721472 is an apocalyptic number.

It is an amenable number.

6416721472 is an abundant number, since it is smaller than the sum of its proper divisors (8143249408).

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

6416721472 is a wasteful number, since it uses less digits than its factorization.

6416721472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7659 (or 7649 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 6416721472 is about 80104.4410254513. The cubic root of 6416721472 is about 1858.2510897093.

The spelling of 6416721472 in words is "six billion, four hundred sixteen million, seven hundred twenty-one thousand, four hundred seventy-two".