1240534555061 has 2 divisors, whose sum is σ = 1240534555062. Its totient is φ = 1240534555060.

The previous prime is 1240534554997. The next prime is 1240534555093. The reversal of 1240534555061 is 1605554350421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1186073464900 + 54461090161 = 1089070^2 + 233369^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240534555061 - 2⁶ = 1240534554997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240534555361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620267277530 + 620267277531.

It is an arithmetic number, because the mean of its divisors is an integer number (620267277531).

Almost surely, 2^{1240534555061} is an apocalyptic number.

It is an amenable number.

1240534555061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240534555061 is an equidigital number, since it uses as much as digits as its factorization.

1240534555061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 1240534555061 in words is "one trillion, two hundred forty billion, five hundred thirty-four million, five hundred fifty-five thousand, sixty-one".