43421550356 has 12 divisors (see below), whose sum is σ = 76016117268. Its totient is φ = 21702659712.

The previous prime is 43421550343. The next prime is 43421550373. The reversal of 43421550356 is 65305512434.

It can be written as a sum of positive squares in 2 ways, for example, as 11830042756 + 31591507600 = 108766^2 + 177740^2 .

It is a congruent number.

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, 2016821 + ... + 2038236.

It is an arithmetic number, because the mean of its divisors is an integer number (6334676439).

Almost surely, 2^43421550356 is an apocalyptic number.

It is an amenable number.

43421550356 is a deficient number, since it is larger than the sum of its proper divisors (32594566912).

43421550356 is a wasteful number, since it uses less digits than its factorization.

43421550356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4057738 (or 4057736 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 38.

The spelling of 43421550356 in words is "forty-three billion, four hundred twenty-one million, five hundred fifty thousand, three hundred fifty-six".