1351045645217 has 2 divisors, whose sum is σ = 1351045645218. Its totient is φ = 1351045645216.

The previous prime is 1351045645163. The next prime is 1351045645231. The reversal of 1351045645217 is 7125465401531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 819778133056 + 531267512161 = 905416^2 + 728881^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351045645217 - 2⁶ = 1351045645153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1351045645277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675522822608 + 675522822609.

It is an arithmetic number, because the mean of its divisors is an integer number (675522822609).

Almost surely, 2^{1351045645217} is an apocalyptic number.

It is an amenable number.

1351045645217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351045645217 is an equidigital number, since it uses as much as digits as its factorization.

1351045645217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504000, while the sum is 44.

The spelling of 1351045645217 in words is "one trillion, three hundred fifty-one billion, forty-five million, six hundred forty-five thousand, two hundred seventeen".