475991447380 has 12 divisors (see below), whose sum is σ = 999582039540. Its totient is φ = 190396578944.

The previous prime is 475991447357. The next prime is 475991447461. The reversal of 475991447380 is 83744199574.

It can be written as a sum of positive squares in 2 ways, for example, as 115744204944 + 360247242436 = 340212^2 + 600206^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11899786165 + ... + 11899786204.

It is an arithmetic number, because the mean of its divisors is an integer number (83298503295).

Almost surely, 2^475991447380 is an apocalyptic number.

It is an amenable number.

475991447380 is an abundant number, since it is smaller than the sum of its proper divisors (523590592160).

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

475991447380 is a wasteful number, since it uses less digits than its factorization.

475991447380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23799572378 (or 23799572376 counting only the distinct ones).

The product of its (nonzero) digits is 30481920, while the sum is 61.

The spelling of 475991447380 in words is "four hundred seventy-five billion, nine hundred ninety-one million, four hundred forty-seven thousand, three hundred eighty".