475388072840 has 128 divisors (see below), whose sum is σ = 1098132940800. Its totient is φ = 185147289600.

The previous prime is 475388072839. The next prime is 475388072851. The reversal of 475388072840 is 48270883574.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169719440 + ... + 169722240.

It is an arithmetic number, because the mean of its divisors is an integer number (8579163600).

Almost surely, 2^475388072840 is an apocalyptic number.

475388072840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 475388072840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (549066470400).

475388072840 is an abundant number, since it is smaller than the sum of its proper divisors (622744867960).

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

475388072840 is a wasteful number, since it uses less digits than its factorization.

475388072840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447 (or 3443 counting only the distinct ones).

The product of its (nonzero) digits is 12042240, while the sum is 56.

The spelling of 475388072840 in words is "four hundred seventy-five billion, three hundred eighty-eight million, seventy-two thousand, eight hundred forty".