40625578633 has 2 divisors, whose sum is σ = 40625578634. Its totient is φ = 40625578632.

The previous prime is 40625578601. The next prime is 40625578711. The reversal of 40625578633 is 33687552604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38794423369 + 1831155264 = 196963^2 + 42792^2 .

It is a cyclic number.

It is not a de Polignac number, because 40625578633 - 2⁵ = 40625578601 is a prime.

It is a super-3 number, since 3×40625578633³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (40625578033) 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, 20312789316 + 20312789317.

It is an arithmetic number, because the mean of its divisors is an integer number (20312789317).

Almost surely, 2^40625578633 is an apocalyptic number.

It is an amenable number.

40625578633 is a deficient number, since it is larger than the sum of its proper divisors (1).

40625578633 is an equidigital number, since it uses as much as digits as its factorization.

40625578633 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 49.

The spelling of 40625578633 in words is "forty billion, six hundred twenty-five million, five hundred seventy-eight thousand, six hundred thirty-three".