6475489128 has 96 divisors (see below), whose sum is σ = 17776100160. Its totient is φ = 2129368320.

The previous prime is 6475489117. The next prime is 6475489147. The reversal of 6475489128 is 8219845746.

It is a happy number.

6475489128 is a `hidden beast` number, since 6 + 4 + 7 + 548 + 91 + 2 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1645323 + ... + 1649253.

It is an arithmetic number, because the mean of its divisors is an integer number (185167710).

Almost surely, 2^6475489128 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 6475489128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8888050080).

6475489128 is an abundant number, since it is smaller than the sum of its proper divisors (11300611032).

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

6475489128 is a wasteful number, since it uses less digits than its factorization.

6475489128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247 (or 4240 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 6475489128 is about 80470.4239332688. The cubic root of 6475489128 is about 1863.9068004326.

The spelling of 6475489128 in words is "six billion, four hundred seventy-five million, four hundred eighty-nine thousand, one hundred twenty-eight".