40444200242191 has 2 divisors, whose sum is σ = 40444200242192. Its totient is φ = 40444200242190.

The previous prime is 40444200242167. The next prime is 40444200242213. The reversal of 40444200242191 is 19124200244404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40444200242191 - 2³¹ = 40442052758543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40444200242191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40444200242141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20222100121095 + 20222100121096.

It is an arithmetic number, because the mean of its divisors is an integer number (20222100121096).

Almost surely, 2^{40444200242191} is an apocalyptic number.

40444200242191 is a deficient number, since it is larger than the sum of its proper divisors (1).

40444200242191 is an equidigital number, since it uses as much as digits as its factorization.

40444200242191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 37.

Adding to 40444200242191 its reverse (19124200244404), we get a palindrome (59568400486595).

The spelling of 40444200242191 in words is "forty trillion, four hundred forty-four billion, two hundred million, two hundred forty-two thousand, one hundred ninety-one".