43780428940168 has 16 divisors (see below), whose sum is σ = 83010644761500. Its totient is φ = 21644257003776.

The previous prime is 43780428940151. The next prime is 43780428940219. The reversal of 43780428940168 is 86104982408734.

It can be written as a sum of positive squares in 2 ways, for example, as 38842336099044 + 4938092841124 = 6232362^2 + 2222182^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30744682533 + ... + 30744683956.

Almost surely, 2^{43780428940168} is an apocalyptic number.

It is an amenable number.

43780428940168 is a deficient number, since it is larger than the sum of its proper divisors (39230215821332).

43780428940168 is a wasteful number, since it uses less digits than its factorization.

43780428940168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61489366584 (or 61489366580 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 64.

The spelling of 43780428940168 in words is "forty-three trillion, seven hundred eighty billion, four hundred twenty-eight million, nine hundred forty thousand, one hundred sixty-eight".