43402820434 has 4 divisors (see below), whose sum is σ = 65104230654. Its totient is φ = 21701410216.

The previous prime is 43402820423. The next prime is 43402820441.

43402820434 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 32629003225 + 10773817209 = 180635^2 + 103797^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 43402820434.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10850705107 + ... + 10850705110.

Almost surely, 2^43402820434 is an apocalyptic number.

43402820434 is a deficient number, since it is larger than the sum of its proper divisors (21701410220).

43402820434 is a wasteful number, since it uses less digits than its factorization.

43402820434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21701410219.

The product of its (nonzero) digits is 73728, while the sum is 34.

The spelling of 43402820434 in words is "forty-three billion, four hundred two million, eight hundred twenty thousand, four hundred thirty-four".