475991342208 has 72 divisors (see below), whose sum is σ = 1369782056955. Its totient is φ = 158655975168.

The previous prime is 475991342179. The next prime is 475991342209. The reversal of 475991342208 is 802243199574.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

475991342208 is a `hidden beast` number, since 4 + 7 + 5 + 9 + 91 + 342 + 208 = 666.

It can be written as a sum of positive squares in only one way, i.e., 237995671104 + 237995671104 = 487848^2 + 487848^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=487848.

It is not an unprimeable number, because it can be changed into a prime (475991342209) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23406541 + ... + 23426867.

Almost surely, 2^475991342208 is an apocalyptic number.

475991342208 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

475991342208 is an abundant number, since it is smaller than the sum of its proper divisors (893790714747).

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

475991342208 is an frugal number, since it uses more digits than its factorization.

475991342208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40674 (or 20332 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 475991342208 in words is "four hundred seventy-five billion, nine hundred ninety-one million, three hundred forty-two thousand, two hundred eight".