40043055340049 has 2 divisors, whose sum is σ = 40043055340050. Its totient is φ = 40043055340048.

The previous prime is 40043055340021. The next prime is 40043055340051. The reversal of 40043055340049 is 94004355034004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25292601180625 + 14750454159424 = 5029175^2 + 3840632^2 .

It is a cyclic number.

It is not a de Polignac number, because 40043055340049 - 2⁴⁰ = 38943543712273 is a prime.

Together with 40043055340051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 40043055339988 and 40043055340015.

It is not a weakly prime, because it can be changed into another prime (40043055340549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021527670024 + 20021527670025.

It is an arithmetic number, because the mean of its divisors is an integer number (20021527670025).

Almost surely, 2^{40043055340049} is an apocalyptic number.

It is an amenable number.

40043055340049 is a deficient number, since it is larger than the sum of its proper divisors (1).

40043055340049 is an equidigital number, since it uses as much as digits as its factorization.

40043055340049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 41.

The spelling of 40043055340049 in words is "forty trillion, forty-three billion, fifty-five million, three hundred forty thousand, forty-nine".