40353400673 has 2 divisors, whose sum is σ = 40353400674. Its totient is φ = 40353400672.

The previous prime is 40353400651. The next prime is 40353400679. The reversal of 40353400673 is 37600435304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26892064144 + 13461336529 = 163988^2 + 116023^2 .

It is a cyclic number.

It is not a de Polignac number, because 40353400673 - 2¹⁶ = 40353335137 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40353400679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20176700336 + 20176700337.

It is an arithmetic number, because the mean of its divisors is an integer number (20176700337).

Almost surely, 2^40353400673 is an apocalyptic number.

It is an amenable number.

40353400673 is a deficient number, since it is larger than the sum of its proper divisors (1).

40353400673 is an equidigital number, since it uses as much as digits as its factorization.

40353400673 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 35.

Adding to 40353400673 its reverse (37600435304), we get a palindrome (77953835977).

The spelling of 40353400673 in words is "forty billion, three hundred fifty-three million, four hundred thousand, six hundred seventy-three".