40423465573 has 2 divisors, whose sum is σ = 40423465574. Its totient is φ = 40423465572.

The previous prime is 40423465567. The next prime is 40423465613. The reversal of 40423465573 is 37556432404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38534867809 + 1888597764 = 196303^2 + 43458^2 .

It is a cyclic number.

It is not a de Polignac number, because 40423465573 - 2²⁵ = 40389911141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40423465513) 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, 20211732786 + 20211732787.

It is an arithmetic number, because the mean of its divisors is an integer number (20211732787).

Almost surely, 2^40423465573 is an apocalyptic number.

It is an amenable number.

40423465573 is a deficient number, since it is larger than the sum of its proper divisors (1).

40423465573 is an equidigital number, since it uses as much as digits as its factorization.

40423465573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1209600, while the sum is 43.

Adding to 40423465573 its reverse (37556432404), we get a palindrome (77979897977).

The spelling of 40423465573 in words is "forty billion, four hundred twenty-three million, four hundred sixty-five thousand, five hundred seventy-three".