40234350522649 has 2 divisors, whose sum is σ = 40234350522650. Its totient is φ = 40234350522648.

The previous prime is 40234350522647. The next prime is 40234350522673. The reversal of 40234350522649 is 94622505343204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38354797265625 + 1879553257024 = 6193125^2 + 1370968^2 .

It is a cyclic number.

It is not a de Polignac number, because 40234350522649 - 2¹ = 40234350522647 is a prime.

Together with 40234350522647, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40234350522647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20117175261324 + 20117175261325.

It is an arithmetic number, because the mean of its divisors is an integer number (20117175261325).

Almost surely, 2^{40234350522649} is an apocalyptic number.

It is an amenable number.

40234350522649 is a deficient number, since it is larger than the sum of its proper divisors (1).

40234350522649 is an equidigital number, since it uses as much as digits as its factorization.

40234350522649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 40234350522649 in words is "forty trillion, two hundred thirty-four billion, three hundred fifty million, five hundred twenty-two thousand, six hundred forty-nine".