40522635501661 has 2 divisors, whose sum is σ = 40522635501662. Its totient is φ = 40522635501660.

The previous prime is 40522635501589. The next prime is 40522635501731. The reversal of 40522635501661 is 16610553622504.

40522635501661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40362070203225 + 160565298436 = 6353115^2 + 400706^2 .

It is a cyclic number.

It is not a de Polignac number, because 40522635501661 - 2⁷ = 40522635501533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40522635507661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20261317750830 + 20261317750831.

It is an arithmetic number, because the mean of its divisors is an integer number (20261317750831).

Almost surely, 2^{40522635501661} is an apocalyptic number.

It is an amenable number.

40522635501661 is a deficient number, since it is larger than the sum of its proper divisors (1).

40522635501661 is an equidigital number, since it uses as much as digits as its factorization.

40522635501661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296000, while the sum is 46.

The spelling of 40522635501661 in words is "forty trillion, five hundred twenty-two billion, six hundred thirty-five million, five hundred one thousand, six hundred sixty-one".