540446202381901 has 2 divisors, whose sum is σ = 540446202381902. Its totient is φ = 540446202381900.

The previous prime is 540446202381893. The next prime is 540446202381929. The reversal of 540446202381901 is 109183202644045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 352684681569801 + 187761520812100 = 18779901^2 + 13702610^2 .

It is a cyclic number.

It is not a de Polignac number, because 540446202381901 - 2³ = 540446202381893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (540446202381941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270223101190950 + 270223101190951.

It is an arithmetic number, because the mean of its divisors is an integer number (270223101190951).

Almost surely, 2^{540446202381901} is an apocalyptic number.

It is an amenable number.

540446202381901 is a deficient number, since it is larger than the sum of its proper divisors (1).

540446202381901 is an equidigital number, since it uses as much as digits as its factorization.

540446202381901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 540446202381901 in words is "five hundred forty trillion, four hundred forty-six billion, two hundred two million, three hundred eighty-one thousand, nine hundred one".