40042444020349 has 2 divisors, whose sum is σ = 40042444020350. Its totient is φ = 40042444020348.

The previous prime is 40042444020307. The next prime is 40042444020361. The reversal of 40042444020349 is 94302044424004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27045013032324 + 12997430988025 = 5200482^2 + 3605195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40042444020349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40042444060349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20021222010174 + 20021222010175.

It is an arithmetic number, because the mean of its divisors is an integer number (20021222010175).

Almost surely, 2^{40042444020349} is an apocalyptic number.

It is an amenable number.

40042444020349 is a deficient number, since it is larger than the sum of its proper divisors (1).

40042444020349 is an equidigital number, since it uses as much as digits as its factorization.

40042444020349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 40042444020349 in words is "forty trillion, forty-two billion, four hundred forty-four million, twenty thousand, three hundred forty-nine".