475139551920 has 640 divisors, whose sum is σ = 1732826234880. Its totient is φ = 106563072000.

The previous prime is 475139551877. The next prime is 475139551927. The reversal of 475139551920 is 29155931574.

It is not an unprimeable number, because it can be changed into a prime (475139551927) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 253948585 + ... + 253950455.

It is an arithmetic number, because the mean of its divisors is an integer number (2707540992).

Almost surely, 2^475139551920 is an apocalyptic number.

475139551920 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 475139551920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (866413117440).

475139551920 is an abundant number, since it is smaller than the sum of its proper divisors (1257686682960).

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

475139551920 is a wasteful number, since it uses less digits than its factorization.

475139551920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 2059 counting only the distinct ones).

The product of its (nonzero) digits is 1701000, while the sum is 51.

The spelling of 475139551920 in words is "four hundred seventy-five billion, one hundred thirty-nine million, five hundred fifty-one thousand, nine hundred twenty".