43332649537 has 2 divisors, whose sum is σ = 43332649538. Its totient is φ = 43332649536.

The previous prime is 43332649501. The next prime is 43332649583. The reversal of 43332649537 is 73594623334.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37324694416 + 6007955121 = 193196^2 + 77511^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43332649537 is a prime.

It is not a weakly prime, because it can be changed into another prime (43332649637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21666324768 + 21666324769.

It is an arithmetic number, because the mean of its divisors is an integer number (21666324769).

Almost surely, 2^43332649537 is an apocalyptic number.

It is an amenable number.

43332649537 is a deficient number, since it is larger than the sum of its proper divisors (1).

43332649537 is an equidigital number, since it uses as much as digits as its factorization.

43332649537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 49.

The spelling of 43332649537 in words is "forty-three billion, three hundred thirty-two million, six hundred forty-nine thousand, five hundred thirty-seven".