40244531641 has 2 divisors, whose sum is σ = 40244531642. Its totient is φ = 40244531640.

The previous prime is 40244531633. The next prime is 40244531671. The reversal of 40244531641 is 14613544204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26469988416 + 13774543225 = 162696^2 + 117365^2 .

It is a cyclic number.

It is not a de Polignac number, because 40244531641 - 2³ = 40244531633 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40244531597 and 40244531606.

It is not a weakly prime, because it can be changed into another prime (40244531611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20122265820 + 20122265821.

It is an arithmetic number, because the mean of its divisors is an integer number (20122265821).

Almost surely, 2^40244531641 is an apocalyptic number.

It is an amenable number.

40244531641 is a deficient number, since it is larger than the sum of its proper divisors (1).

40244531641 is an equidigital number, since it uses as much as digits as its factorization.

40244531641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 40244531641 in words is "forty billion, two hundred forty-four million, five hundred thirty-one thousand, six hundred forty-one".