43243556753 has 2 divisors, whose sum is σ = 43243556754. Its totient is φ = 43243556752.

The previous prime is 43243556717. The next prime is 43243556767. The reversal of 43243556753 is 35765534234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31765219984 + 11478336769 = 178228^2 + 107137^2 .

It is a cyclic number.

It is not a de Polignac number, because 43243556753 - 2¹² = 43243552657 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 43243556698 and 43243556707.

It is not a weakly prime, because it can be changed into another prime (43243558753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21621778376 + 21621778377.

It is an arithmetic number, because the mean of its divisors is an integer number (21621778377).

Almost surely, 2^43243556753 is an apocalyptic number.

It is an amenable number.

43243556753 is a deficient number, since it is larger than the sum of its proper divisors (1).

43243556753 is an equidigital number, since it uses as much as digits as its factorization.

43243556753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536000, while the sum is 47.

The spelling of 43243556753 in words is "forty-three billion, two hundred forty-three million, five hundred fifty-six thousand, seven hundred fifty-three".