6471455256 has 128 divisors (see below), whose sum is σ = 20826086400. Its totient is φ = 1823627520.

The previous prime is 6471455209. The next prime is 6471455257. The reversal of 6471455256 is 6525541746.

6471455256 is a `hidden beast` number, since 6 + 47 + 1 + 4 + 552 + 56 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6471455257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81061 + ... + 139691.

It is an arithmetic number, because the mean of its divisors is an integer number (162703800).

Almost surely, 2^6471455256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6471455256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10413043200).

6471455256 is an abundant number, since it is smaller than the sum of its proper divisors (14354631144).

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

6471455256 is a wasteful number, since it uses less digits than its factorization.

6471455256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58726 (or 58716 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 6471455256 is about 80445.3557142984. The cubic root of 6471455256 is about 1863.5196830477.

The spelling of 6471455256 in words is "six billion, four hundred seventy-one million, four hundred fifty-five thousand, two hundred fifty-six".