39505000043 has 2 divisors, whose sum is σ = 39505000044. Its totient is φ = 39505000042.

The previous prime is 39504999979. The next prime is 39505000103. The reversal of 39505000043 is 34000050593.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 39505000043 - 2⁶ = 39504999979 is a prime.

It is not a weakly prime, because it can be changed into another prime (39505000243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19752500021 + 19752500022.

It is an arithmetic number, because the mean of its divisors is an integer number (19752500022).

Almost surely, 2^39505000043 is an apocalyptic number.

39505000043 is a deficient number, since it is larger than the sum of its proper divisors (1).

39505000043 is an equidigital number, since it uses as much as digits as its factorization.

39505000043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 29.

The spelling of 39505000043 in words is "thirty-nine billion, five hundred five million, forty-three", and thus it is an aban number.