1201540284017 has 2 divisors, whose sum is σ = 1201540284018. Its totient is φ = 1201540284016.

The previous prime is 1201540283963. The next prime is 1201540284059. The reversal of 1201540284017 is 7104820451021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1200593552656 + 946731361 = 1095716^2 + 30769^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201540284017 - 2²² = 1201536089713 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201540281017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600770142008 + 600770142009.

It is an arithmetic number, because the mean of its divisors is an integer number (600770142009).

Almost surely, 2^{1201540284017} is an apocalyptic number.

It is an amenable number.

1201540284017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201540284017 is an equidigital number, since it uses as much as digits as its factorization.

1201540284017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17920, while the sum is 35.

The spelling of 1201540284017 in words is "one trillion, two hundred one billion, five hundred forty million, two hundred eighty-four thousand, seventeen".