43091457746 has 4 divisors (see below), whose sum is σ = 64637186622. Its totient is φ = 21545728872.

The previous prime is 43091457733. The next prime is 43091457749. The reversal of 43091457746 is 64775419034.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64775419034 = 2 ⋅32387709517.

It can be written as a sum of positive squares in only one way, i.e., 28395957121 + 14695500625 = 168511^2 + 121225^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43091457694 and 43091457703.

It is not an unprimeable number, because it can be changed into a prime (43091457749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10772864435 + ... + 10772864438.

Almost surely, 2^43091457746 is an apocalyptic number.

43091457746 is a deficient number, since it is larger than the sum of its proper divisors (21545728876).

43091457746 is a wasteful number, since it uses less digits than its factorization.

43091457746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21545728875.

The product of its (nonzero) digits is 2540160, while the sum is 50.

The spelling of 43091457746 in words is "forty-three billion, ninety-one million, four hundred fifty-seven thousand, seven hundred forty-six".