1040542636513 has 2 divisors, whose sum is σ = 1040542636514. Its totient is φ = 1040542636512.

The previous prime is 1040542636453. The next prime is 1040542636597. The reversal of 1040542636513 is 3156362450401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 615082569984 + 425460066529 = 784272^2 + 652273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040542636513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1040542636013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520271318256 + 520271318257.

It is an arithmetic number, because the mean of its divisors is an integer number (520271318257).

Almost surely, 2^{1040542636513} is an apocalyptic number.

It is an amenable number.

1040542636513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040542636513 is an equidigital number, since it uses as much as digits as its factorization.

1040542636513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 1040542636513 in words is "one trillion, forty billion, five hundred forty-two million, six hundred thirty-six thousand, five hundred thirteen".