43218649983 has 4 divisors (see below), whose sum is σ = 57624866648. Its totient is φ = 28812433320.

The previous prime is 43218649949. The next prime is 43218650011. The reversal of 43218649983 is 38994681234.

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

It is not a de Polignac number, because 43218649983 - 2⁶ = 43218649919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43218649913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7203108328 + ... + 7203108333.

It is an arithmetic number, because the mean of its divisors is an integer number (14406216662).

Almost surely, 2^43218649983 is an apocalyptic number.

43218649983 is a deficient number, since it is larger than the sum of its proper divisors (14406216665).

43218649983 is a wasteful number, since it uses less digits than its factorization.

43218649983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14406216664.

The product of its digits is 8957952, while the sum is 57.

The spelling of 43218649983 in words is "forty-three billion, two hundred eighteen million, six hundred forty-nine thousand, nine hundred eighty-three".