461845185440 has 24 divisors (see below), whose sum is σ = 1091109250980. Its totient is φ = 184738074112.

The previous prime is 461845185413. The next prime is 461845185443. The reversal of 461845185440 is 44581548164.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 435436335376 + 26408850064 = 659876^2 + 162508^2 .

It is not an unprimeable number, because it can be changed into a prime (461845185443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1443266045 + ... + 1443266364.

Almost surely, 2^461845185440 is an apocalyptic number.

461845185440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

461845185440 is an abundant number, since it is smaller than the sum of its proper divisors (629264065540).

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

461845185440 is a wasteful number, since it uses less digits than its factorization.

461845185440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886532424 (or 2886532416 counting only the distinct ones).

The product of its (nonzero) digits is 2457600, while the sum is 50.

The spelling of 461845185440 in words is "four hundred sixty-one billion, eight hundred forty-five million, one hundred eighty-five thousand, four hundred forty".