6400172475 has 60 divisors (see below), whose sum is σ = 11909334976. Its totient is φ = 3397878720.

The previous prime is 6400172473. The next prime is 6400172479. The reversal of 6400172475 is 5742710046.

6400172475 is a `hidden beast` number, since 6 + 400 + 1 + 7 + 247 + 5 = 666.

It is not a de Polignac number, because 6400172475 - 2¹ = 6400172473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6400172473) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 444489 + ... + 458661.

Almost surely, 2^6400172475 is an apocalyptic number.

6400172475 is a deficient number, since it is larger than the sum of its proper divisors (5509162501).

6400172475 is a wasteful number, since it uses less digits than its factorization.

6400172475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14418 (or 14404 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 6400172475 is about 80001.0779614875. The cubic root of 6400172475 is about 1856.6522115877.

The spelling of 6400172475 in words is "six billion, four hundred million, one hundred seventy-two thousand, four hundred seventy-five".