40244411221481 has 2 divisors, whose sum is σ = 40244411221482. Its totient is φ = 40244411221480.

The previous prime is 40244411221423. The next prime is 40244411221517. The reversal of 40244411221481 is 18412211444204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28343698254400 + 11900712967081 = 5323880^2 + 3449741^2 .

It is a cyclic number.

It is not a de Polignac number, because 40244411221481 - 2²² = 40244407027177 is a prime.

It is a super-2 number, since 2×40244411221481² (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40244411224481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122205610740 + 20122205610741.

It is an arithmetic number, because the mean of its divisors is an integer number (20122205610741).

Almost surely, 2^{40244411221481} is an apocalyptic number.

It is an amenable number.

40244411221481 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244411221481 is an equidigital number, since it uses as much as digits as its factorization.

40244411221481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65536, while the sum is 38.

Adding to 40244411221481 its reverse (18412211444204), we get a palindrome (58656622665685).

The spelling of 40244411221481 in words is "forty trillion, two hundred forty-four billion, four hundred eleven million, two hundred twenty-one thousand, four hundred eighty-one".