43784134345 has 32 divisors (see below), whose sum is σ = 62680301568. Its totient is φ = 28707611328.

The previous prime is 43784134327. The next prime is 43784134367. The reversal of 43784134345 is 54343148734.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 43784134345 - 2¹¹ = 43784132297 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43784134295 and 43784134304.

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, 2653912 + ... + 2670358.

It is an arithmetic number, because the mean of its divisors is an integer number (1958759424).

Almost surely, 2^43784134345 is an apocalyptic number.

It is an amenable number.

43784134345 is a deficient number, since it is larger than the sum of its proper divisors (18896167223).

43784134345 is a wasteful number, since it uses less digits than its factorization.

43784134345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19789.

The product of its digits is 1935360, while the sum is 46.

The spelling of 43784134345 in words is "forty-three billion, seven hundred eighty-four million, one hundred thirty-four thousand, three hundred forty-five".