475564231506 has 128 divisors (see below), whose sum is σ = 1206189895680. Its totient is φ = 121634618112.

The previous prime is 475564231501. The next prime is 475564231517. The reversal of 475564231506 is 605132465574.

It is a super-2 number, since 2×475564231506² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (475564231501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6163675 + ... + 6240353.

It is an arithmetic number, because the mean of its divisors is an integer number (9423358560).

Almost surely, 2^475564231506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 475564231506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603094947840).

475564231506 is an abundant number, since it is smaller than the sum of its proper divisors (730625664174).

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

475564231506 is a wasteful number, since it uses less digits than its factorization.

475564231506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77048.

The product of its (nonzero) digits is 3024000, while the sum is 48.

The spelling of 475564231506 in words is "four hundred seventy-five billion, five hundred sixty-four million, two hundred thirty-one thousand, five hundred six".