6445284172 has 24 divisors (see below), whose sum is σ = 11502310176. Its totient is φ = 3159439488.

The previous prime is 6445284119. The next prime is 6445284199. The reversal of 6445284172 is 2714825446.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 17323 + ... + 114850.

It is an arithmetic number, because the mean of its divisors is an integer number (479262924).

Almost surely, 2^6445284172 is an apocalyptic number.

It is an amenable number.

6445284172 is a deficient number, since it is larger than the sum of its proper divisors (5057026004).

6445284172 is a wasteful number, since it uses less digits than its factorization.

6445284172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132417 (or 132415 counting only the distinct ones).

The product of its digits is 430080, while the sum is 43.

The square root of 6445284172 is about 80282.5271899185. The cubic root of 6445284172 is about 1861.0042147312.

The spelling of 6445284172 in words is "six billion, four hundred forty-five million, two hundred eighty-four thousand, one hundred seventy-two".