43485213229920 has 1920 divisors, whose sum is σ = 194684509780992. Its totient is φ = 8953114705920.

The previous prime is 43485213229867. The next prime is 43485213229937. The reversal of 43485213229920 is 2992231258434.

43485213229920 is a `hidden beast` number, since 4 + 3 + 4 + 8 + 521 + 3 + 2 + 2 + 99 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 13644558567 + ... + 13644561753.

Almost surely, 2^{43485213229920} is an apocalyptic number.

43485213229920 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 43485213229920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97342254890496).

43485213229920 is an abundant number, since it is smaller than the sum of its proper divisors (151199296551072).

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

43485213229920 is a wasteful number, since it uses less digits than its factorization.

43485213229920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3367 (or 3328 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 54.

The spelling of 43485213229920 in words is "forty-three trillion, four hundred eighty-five billion, two hundred thirteen million, two hundred twenty-nine thousand, nine hundred twenty".