43620245664545 has 16 divisors (see below), whose sum is σ = 57137749800768. Its totient is φ = 31704435723840.

The previous prime is 43620245664533. The next prime is 43620245664547. The reversal of 43620245664545 is 54546654202634.

43620245664545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43620245664545 - 2¹² = 43620245660449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43620245664547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242150459 + ... + 242330528.

It is an arithmetic number, because the mean of its divisors is an integer number (3571109362548).

Almost surely, 2^{43620245664545} is an apocalyptic number.

It is an amenable number.

43620245664545 is a deficient number, since it is larger than the sum of its proper divisors (13517504136223).

43620245664545 is a wasteful number, since it uses less digits than its factorization.

43620245664545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484482640.

The product of its (nonzero) digits is 82944000, while the sum is 56.

The spelling of 43620245664545 in words is "forty-three trillion, six hundred twenty billion, two hundred forty-five million, six hundred sixty-four thousand, five hundred forty-five".