6471255672 has 128 divisors (see below), whose sum is σ = 20755929600. Its totient is φ = 1829827584.

The previous prime is 6471255671. The next prime is 6471255697. The reversal of 6471255672 is 2765521746.

6471255672 is a `hidden beast` number, since 64 + 7 + 1 + 25 + 567 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6471255671) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124603 + ... + 168725.

It is an arithmetic number, because the mean of its divisors is an integer number (162155700).

Almost surely, 2^6471255672 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 6471255672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10377964800).

6471255672 is an abundant number, since it is smaller than the sum of its proper divisors (14284673928).

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

6471255672 is a wasteful number, since it uses less digits than its factorization.

6471255672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44242 (or 44232 counting only the distinct ones).

The product of its digits is 705600, while the sum is 45.

The square root of 6471255672 is about 80444.1152104988. The cubic root of 6471255672 is about 1863.5005254538.

The spelling of 6471255672 in words is "six billion, four hundred seventy-one million, two hundred fifty-five thousand, six hundred seventy-two".