43545604320020 has 96 divisors (see below), whose sum is σ = 105468054652800. Its totient is φ = 14935848076800.

The previous prime is 43545604319969. The next prime is 43545604320091. The reversal of 43545604320020 is 2002340654534.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21788651 + ... + 23703090.

It is an arithmetic number, because the mean of its divisors is an integer number (1098625569300).

Almost surely, 2^{43545604320020} is an apocalyptic number.

It is an amenable number.

43545604320020 is an abundant number, since it is smaller than the sum of its proper divisors (61922450332780).

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

43545604320020 is a wasteful number, since it uses less digits than its factorization.

43545604320020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45492009 (or 45492007 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 38.

Adding to 43545604320020 its reverse (2002340654534), we get a palindrome (45547944974554).

The spelling of 43545604320020 in words is "forty-three trillion, five hundred forty-five billion, six hundred four million, three hundred twenty thousand, twenty".