43396254721 has 4 divisors (see below), whose sum is σ = 43419352000. Its totient is φ = 43373157444.

The previous prime is 43396254679. The next prime is 43396254751. The reversal of 43396254721 is 12745269334.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43396254721 - 2¹¹ = 43396252673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43396254751) 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, 11545821 + ... + 11549578.

It is an arithmetic number, because the mean of its divisors is an integer number (10854838000).

Almost surely, 2^43396254721 is an apocalyptic number.

It is an amenable number.

43396254721 is a deficient number, since it is larger than the sum of its proper divisors (23097279).

43396254721 is a wasteful number, since it uses less digits than its factorization.

43396254721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23097278.

The product of its digits is 1088640, while the sum is 46.

The spelling of 43396254721 in words is "forty-three billion, three hundred ninety-six million, two hundred fifty-four thousand, seven hundred twenty-one".