40347221633 has 2 divisors, whose sum is σ = 40347221634. Its totient is φ = 40347221632.

The previous prime is 40347221591. The next prime is 40347221659. The reversal of 40347221633 is 33612274304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26083219009 + 14264002624 = 161503^2 + 119432^2 .

It is a cyclic number.

It is not a de Polignac number, because 40347221633 - 2⁸ = 40347221377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40347221593 and 40347221602.

It is not a weakly prime, because it can be changed into another prime (40347220633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20173610816 + 20173610817.

It is an arithmetic number, because the mean of its divisors is an integer number (20173610817).

Almost surely, 2^40347221633 is an apocalyptic number.

It is an amenable number.

40347221633 is a deficient number, since it is larger than the sum of its proper divisors (1).

40347221633 is an equidigital number, since it uses as much as digits as its factorization.

40347221633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 35.

Adding to 40347221633 its reverse (33612274304), we get a palindrome (73959495937).

The spelling of 40347221633 in words is "forty billion, three hundred forty-seven million, two hundred twenty-one thousand, six hundred thirty-three".