43782234181645 has 16 divisors (see below), whose sum is σ = 53109350795520. Its totient is φ = 34646000760000.

The previous prime is 43782234181613. The next prime is 43782234181691. The reversal of 43782234181645 is 54618143228734.

It is not a de Polignac number, because 43782234181645 - 2⁵ = 43782234181613 is a prime.

It is a super-3 number, since 3×43782234181645³ (a number of 42 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43782234181645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40714485 + ... + 41775994.

It is an arithmetic number, because the mean of its divisors is an integer number (3319334424720).

Almost surely, 2^{43782234181645} is an apocalyptic number.

It is an amenable number.

43782234181645 is a deficient number, since it is larger than the sum of its proper divisors (9327116613875).

43782234181645 is a wasteful number, since it uses less digits than its factorization.

43782234181645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82491636.

The product of its digits is 30965760, while the sum is 58.

The spelling of 43782234181645 in words is "forty-three trillion, seven hundred eighty-two billion, two hundred thirty-four million, one hundred eighty-one thousand, six hundred forty-five".