43434643434 has 128 divisors (see below), whose sum is σ = 114581053440. Its totient is φ = 10660978944.

The previous prime is 43434643393. The next prime is 43434643489.

43434643434 is nontrivially palindromic in base 10.

43434643434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 417907 + ... + 511385.

It is an arithmetic number, because the mean of its divisors is an integer number (895164480).

Almost surely, 2^43434643434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43434643434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57290526720).

43434643434 is an abundant number, since it is smaller than the sum of its proper divisors (71146410006).

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

43434643434 is a wasteful number, since it uses less digits than its factorization.

43434643434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93564.

The product of its digits is 1990656, while the sum is 42.

The spelling of 43434643434 in words is "forty-three billion, four hundred thirty-four million, six hundred forty-three thousand, four hundred thirty-four".